MCCRACKEN COUNTY, KENTUCKY
AND INCORPORATED AREA S
COMMUNITY COMMUNITY NAME NUMBER
PADUCAH, CITY OF 210152 MCCRACKEN COUNTY (UNINCORPORATED AREAS) 210151
McCracken County
Effective Date November 2, 2011
Federal Emergency Management Agency
FLOOD INSURANCE STUDY NUMBER 21145CV000A
NOTICE TO FLOOD INSURANCE STUDY USERS
Communities participating in the National Flood Insurance Program (NFIP) have established repositories of flood hazard data for floodplain management and flood insurance purposes. This Flood Insurance Study (FIS) may not contain all data available within the repository. It is advisable to contact the community repository for any additional data.
Selected Flood Insurance Rate Map panels for the community contain information that was previously shown separately on the corresponding Flood Boundary and Floodway Map panels (e.g., floodways, cross sections). In addition, former flood hazard zone designations have been changed as follows:
Old Zone New Zone
A1 through A30 AE V1 through V30 VE B X C X
The Federal Emergency Management Agency (FEMA) may revise and republish part or all of this FIS report at any time. In addition, FEMA may revise part of this FIS report by the Letter of Map Revision process, which does not involve republication or redistribution of the FIS report. Therefore, users should consult with community officials and check the Community Map Repository to obtain the most current FIS report components.
Initial Countywide FIS Effective Date: November 2, 2011
i TABLE OF CONTENTS
Page
1.0 INTRODUCTION 1
1.1 Purpose of Study 1
1.2 Authority and Acknowledgments 1
1.3 Coordination 3
2.0 AREA STUDIED 3
2.1 Scope of Study 3
2.2 Community Description 4
2.3 Principal Flood Problems 5
2.4 Flood Protection Measures 5
3.0 ENGINEERING METHODS 6
3.1 Hydrologic Analyses 6
3.2 Hydraulic Analyses 10
3.3 Vertical Datum 13
4.0 FLOODPLAIN MANAGEMENT APPLICATIONS 14
4.1 Floodplain Boundaries 14
4.2 Floodways 15
5.0 INSURANCE APPLICATION 29
6.0 FLOOD INSURANCE RATE MAP 30
7.0 OTHER STUDIES 32
8.0 LOCATION OF DATA 32
9.0 BIBLIOGRAPHY AND REFERENCES 32
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TABLE OF CONTENTS (continued)
Page
FIGURES
Figure 1 – Floodway Schematic 16
TABLES
Table 1 - Detailed Study Limits 3
Table 2 - Summary of Discharges 7
Table 3 - Manning’s “n” Values 11
Table 4 - Floodway Data 17
Table 5 - Community Map History 31
EXHIBITS
Exhibit 1 - Flood Profiles
Black Branch Panels 01P- 02P Camp Creek Panels 03P- 06P Champion Creek Panel 07P-09P Crooked Creek Panels 10P- 12P Cross Creek Panels 13P Island Creek Panels 14P- 19P Massac Creek Panels 20P- 25P Middle Fork Massac Creek Panels 26P- 30P Ohio River Panels 31P- 34P Perkins Creek Panels 35P- 38P Tennessee River Panel 39P West Fork Massac Creek Panels 40P- 43P
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FLOOD INSURANCE STUDY MCCRACKEN COUNTY, KENTUCKY AND INCORPORATED AREAS
1.0 INTRODUCTION
1.1 Purpose of Study
This Flood Insurance Study (FIS) revises and updates information on the existence and severity of flood hazards in the geographic area of McCracken County, Kentucky; including the City of Paducah and the unincorporated areas of McCracken County (referred to collectively herein as McCracken County), and aids in the administration of the National Flood Insurance Act of 1968 and the Flood Disaster Protection Act of 1973. This study has developed flood-risk data for various areas of the community that will be used to establish actuarial flood insurance rates and to assist the community in its efforts to promote sound floodplain management. Minimum floodplain management requirements for participation in the National Flood Insurance Program (NFIP) are set forth in the Code of Federal Regulations at 44 CFR, 60.3.
In some states or communities, floodplain management criteria or regulations may exist that are more restrictive or comprehensive than the minimum Federal requirements. In such cases, the more restrictive criteria take precedence, and the State (or other jurisdictional agency) will be able to explain them.
The Digital Flood Insurance Rate Map (DFIRM) and FIS Report for this countywide study have been produced in digital format. Flood hazard information was converted to meet the FEMA DFIRM database specifications and Geographic Information System (GIS) format requirements. The flood hazard information was created and is provided in a digital format so that it can be incorporated into a local GIS and be accessed more easily by the community.
1.2 Authority and Acknowledgments
The sources of authority for this Flood Insurance Study are the National Flood Insurance Act of 1968 and the Flood Disaster Protection Act of 1973.
This FIS was prepared to include the incorporated communities within McCracken County in a countywide format. Information on the authority and acknowledgments for each jurisdiction included in this countywide FIS, as compiled from their previous printed FIS reports, is shown on the following page.
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City of Paducah The hydrology and hydraulics analyses for this study were performed by Booker Associates, Inc. (the Study Contractor) for the Federal Insurance Administration, under contract number H-4075. This study was completed in January 1978.
McCracken County The hydrology and hydraulics analyses for this study (Unincorporated Areas) were performed by Booker Associates, Inc. (the Study Contractor) for the Federal Insurance Administration, under contract number H-4075. This study was completed in February 1978.
For this countywide FIS, with the exception of the Black Branch, Camp Creek, Champion Creek, Island Creek, Massac Creek, Middle Fork Massac Creek, Ohio River, Tennessee River and West Fork Massac Creek new hydrologic and hydraulic analyses were prepared for FEMA by AMEC Earth & Environmental, Inc. under Contract No. EMA-2008-CA-5882 and this work was completed in December 2009. Hydrologic and Hydraulic analysis for Black Branch, Camp Creek, Champion Creek, Island Creek, Massac Creek, Middle Fork Massac Creek and West Fork Massac Creek were performed by the Booker Associates, Inc. (the Study Contractor) for the Federal Insurance Administration, under contract number H-4075. A HEC-2 model for the Ohio River was obtained by AMEC from the Louisville district Corps of Engineers (USACE). USACE also provided a HEC-RAS model for the Tennessee River downstream of Kentucky Dam. New detailed hydrologic and hydraulic analyses were performed for Cross Creek, Crooked Creek and Perkins Creek by AMEC Earth & Environmental as part of an update to this flood insurance study. The extents of these analyses are listed in Section 2.0 of this report. Topographic information consisted of Digital Elevation Models produced by using 2-foot contour data provided by McCracken County (Reference 2) for most of the County and 10 meter Digital Elevation Models produced by the U.S Geological Survey (USGS) (Reference 1) for parts of the Ohio River corridor.
Planimetric base map information shown on all FIRM panels was derived from multiple sources. Road centerlines, stream centerlines and political boundary files were provided by the Kentucky Geographic Network and additional stream centerlines and areas were downloaded from the National Hydrography Dataset provided by the U.S. Geological Survey. Users of this FIRM should be aware that minor adjustments may have been made to specific base map features.
The coordinate system used for the production of this FIRM is State Plane, Lambert Conformal Conic, Kentucky Single Zone 1600, North American Datum of 1983 (NAD 83), GRS 80 spheroid. Corner coordinates shown on the FIRM are in latitude and longitude referenced to the UTM projection, NAD 83. Differences in the datum and spheroid used in the production of FIRMs for adjacent counties
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may result in slight positional differences in map features at the county boundaries. These differences do not affect the accuracy of information shown on the FIRM.
1.3 Coordination
An initial Consultation Coordination Officer’s (CCO) meeting is held with representatives of the communities and the study contractors to explain the nature and purpose of the FIS, and to identify the streams to be studied by detailed methods. A final CCO meeting is held with representatives of the communities, FEMA, and the study contractors to review the results of the study.
For this countywide FIS, initial CCO meetings were held on May 27, 2008, and a final CCO meeting was held on February 8, 2010. The initial meetings were attended by representatives of the City of Paducah, McCracken County, AMEC Earth & Environmental Inc. and Kentucky Division of Water (KDOW). All problems raised at that meeting have been addressed.
2.0 AREA STUDIED
2.1 Scope of Study
This FIS report covers the geographic area of McCracken County, Kentucky, including the incorporated communities listed in Section 1.1. The areas studied were selected with priority given to all known flood hazards and areas of projected development or proposed construction through April 2009.
Flooding caused by overflow of Black Branch, Camp Creek, Champion Creek, Crooked Creek, Cross Creek, Island Creek, Massac Creek, Middle Fork Massac Creek, Ohio River, Perkins Creek, Tennessee River and West Fork Massac Creek were studied in detail. The extent of the streams studied using detailed methods are listed in Table 1. TABLE 1- DETAILED STUDY LIMITS
Stream Limits of Detailed Study Black Branch From its confluence with Massac Creek to approximately 120 feet upstream of Buchanan Road. Camp Creek From KY HWY 348 to approximately 2800 feet upstream of The Old Houser Road. Champion Creek From its confluence with Island Creek to approximately 1550 feet upstream of Clark line Road. Crooked Creek From its confluence with Perkins Creek to approximately 430 feet upstream of US HWY 62.
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Cross Creek From approximately 570 feet downstream of Railroad yard to approximately 340 feet upstream of South 24th Street. Island Creek Approximately 450 feet upstream of its confluence with Tennessee River to approximately 400 feet upstream of Husband Road. Massac Creek From its confluence with Ohio River to approximately 600 feet upstream of Clinton Road. Middle Fork Massac Creek From its confluence with Massac Creek to just upstream of State Highway 1438. Ohio River For its entire length through McCracken County. Perkins Creek From its confluence with Ohio River to approximately 2150 feet upstream of US HWY 62. Tennessee River For its entire length within McCracken County. West Fork Massac Creek From approximately 3,300 feet upstream of its confluence with Massac Creek to approximately 6500 feet upstream of Biggs road.
Approximate analyses were used to study those areas having a low development potential or minimal flood hazards.
The scope and methods of study were proposed to, and agreed upon, by representatives of McCracken County, the Area Development District (ADD), AMEC Earth & Environmental Inc., and Kentucky Division of Water (KDOW).
2.2 Community Description
McCracken County and its county seat, Paducah, are located in western Kentucky, a part of the Jackson Purchase Region, on the Ohio and Tennessee Rivers. The county is bounded on the north by Massac County, Illinois, on the northeast by Livingston County, on the east by Marshall County, on the south by Graves County, on the southwest by Carlisle County, and on the west by Ballard County.
McCracken County was named for Captain Virgil McCracken, who served in the War of 1812 and was killed at the Battle of the River Raisin. The economy for McCracken County is centralized around industry, especially in the City of Paducah with the Ohio and Tennessee Rivers, and several railroads bringing industry to the area. Although industry and trade brought economy to the county, the export of tobacco played a huge role on the agriculture side of it as well. (Reference 3)
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In 2008 64,776 people resided in McCracken County. The land area of the county covers approximately 250 square miles (Reference 4).
The climate in McCracken County is temperate with moderately cold winters and warm, humid summers, resulting in an average annual temperature of 57 degrees as measured by the National Weather Service. Precipitation is fairly well distributed throughout the year. The wettest month, on average, is March. Normal rainfall for the year as a whole is 49.24 inches. (Reference 4)
2.3 Principal Flood Problems
Floods in the study reach of the Ohio River are a result of excessive headwater and major tributary runoff. Historical records of Ohio River flooding in McCracken County show large floods occurred in 1867, 1882, 1883, 1884, 1886, and 1897, in the nineteenth century. Major floods in the twentieth century occurred in 1913, 1937, 1945, 1950, 1963, and 1975. The maximum flood on record is the 1937 flood. The 1950 flood is considered to be the 1-percent-annual chance flood.
Northern McCracken County is situated in the floodplain of the Ohio River. Low- lying areas outside the Paducah flood works are subject to periodic flooding during the Ohio River flood season, which lasts from December through May at Paducah.
Damage during these floods is negligible because valuable property is protected by flood works.
There are no historical records of flooding on Cross Creek, Crooked Creek or Island Creek. However, minor flooding does occur within the Paducah city limits. This flooding is the result of intense local thunderstorms which usually occur in the summer and fall.
2.4 Flood Protection Measures
There are very extensive flood protection measures on the Ohio River at and above the City of Paducah. Numerous flood control reservoirs exist on Ohio River tributaries, particularly those constructed by the Tennessee Valley Authority (TVA) on the Tennessee River. The floodwall and levee system constructed by the COE in the 1940’s on the Ohio River protects the city from base flood elevations. These flood works in Paducah, Kentucky are referred to as the Local Flood Protection Project (LFPP). The United States Army Corps of Engineers, Louisville district issued a positive Levee System Evaluation (LSE) to Paducah, Kentucky LFPP on April 6th, 2010. This positive LSE means that Paducah, Kentucky LFPP has met all the requirements for determining the levee system can be reasonably expected to protect against a flood event with at least one percent annual chance exceedance interval, also referred to as the base flood in accordance with EC 1110- 2-6067 and 44 CFR 65.10.
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During periods of high water on the Ohio River, when the lower gates on the flood works must be closed, minor flooding due to ponding occurs on Island and Cross Creeks. To minimize flood damage and allow for storage of this water, a conservancy zone has been established. Within the corporate limits, construction and filling is prohibited below elevation 331.
Island Creek has its source in McCracken County outside the flood dikes. It then flows into the protected area through a gated structure in the dike system. Due to the small size of the culverts through the dike at this point, the dike acts as a flood retarding dam and reduces the flow downstream in the Island Creek channel.
3.0 ENGINEERING METHODS
For the flooding sources studied by detailed methods in the community, standard hydrologic and hydraulic study methods were used to determine the flood-hazard data required for this study. Flood events of a magnitude that is expected to be equaled or exceeded once on the average during any 10-, 50-, 100-, or 500-year period (recurrence interval) have been selected as having special significance for floodplain management and for flood insurance rates. These events, commonly termed the 10-, 50-, 100-, and 500-year floods, have a 10-, 2-, 1-, and 0.2-percent-annual-chance, respectively, of being equaled or exceeded during any year. Although the recurrence interval represents the long-term, average period between floods of a specific magnitude, rare floods could occur at short intervals or even within the same year. The risk of experiencing a rare flood increases when periods greater than 1 year are considered. For example, the risk of having a flood that equals or exceeds the 1-percent-annual-chance flood in any 50-year period is approximately 40 percent (4 in 10); for any 90-year period, the risk increases to approximately 60 percent (6 in 10). The analyses reported herein reflect flooding potentials based on conditions existing in the community at the time of completion of this study. Maps and flood elevations will be amended periodically to reflect future changes.
3.1 Hydrologic Analyses
Hydrologic analyses were carried out to establish peak discharge-frequency relationships for each flooding source studied by detailed methods affecting the community.
Discharge-frequency data for Black Branch, Camp Creek, Champion Creek, Island Creek, Massac Creek, Middle Fork Massac Creek and West Fork Massac Creek were defined using a regional relationship developed by the U.S Geological Survey (USGS) which relates basin characteristics to stream flow characteristics (Reference 7). Discharges for the 0.2-percent-annual-chance floods on these streams were determined by straight line extrapolation of a log probability graph of flood discharges computed for frequencies up to the 1-percent-annual-chance flood. Discharges below hydraulic structures on Island Creek were reduced to account for extensive flood storage above the structures. The discharge reductions
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were based on information provided by the USACE Louisville District (Reference 8).
Natural discharge-frequency curves for the Ohio River were developed by the USACE. Modified discharge-frequency curves for the Ohio River were developed by routing 12 representative floods for the Ohio River modified by an upstream reservoir system. That system included reservoirs completed or near completion in 1976.
A log Pearson type 3 analysis was performed on the annual peak discharges from the Kentucky Dam to establish the 10-, 2-, 1-, and 0.2-percent-annual-chance frequency flows for the Tennessee River. No local drainage was added to the flows originating from the Kentucky Dam.
Rainfall-Runoff Analysis were used to determine discharge-frequency for Cross Creek, Crooked Creek and Perkins Creek.
Peak discharge-frequency area relationship for each flooding source studied in detail in the community are shown in Table 2, Summary of Discharges.
TABLE 2 - SUMMARY OF DISCHARGES
PEAK DISCHARGES (cubic feet per second) 10-Percent 2-Percent- 1-Percent- 0.2-Percent FLOODING SOURCE DRAINAGE Annual Annual- Annual- Annual AND LOCATION AREA (sq. miles) Chance Chance Chance Chance
BLACK BRANCH Confluence with Massac 3.23 1,380 2,130 2,470 3,310 Creek Section C 2.04 949 1,460 1,700 2,280 Section F 1.31 650 1,000 1,160 1,560 CAMP CREEK Hardmoney Road 12.22 2,740 4,140 4,776 6,310 Section B 9.98 2,290 3,460 3,990 5,280 Old Mayfield Road (KY 5.75 1,410 2,140 2,470 3,240 994) Section E 3.37 1,300 1,970 2,270 2,990 Section H 1.99 850 1,280 1,480 1,950 Section I 1.02 470 720 830 1,090 CHAMPION CREEK Confluence with Island 6.90 2,300 3,520 4,070 5,800 Creek Old Mayfield Road (KY 6.35 2,160 3,310 3,830 5,450 994) Section F 3.21 1,280 1,960 2,260 3,220
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PEAK DISCHARGES (cubic feet per second) 10-Percent 2-Percent- 1-Percent- 0.2-Percent FLOODING SOURCE DRAINAGE Annual Annual- Annual- Annual AND LOCATION AREA (sq. miles) Chance Chance Chance Chance Section G 2.27 964 1,480 1,710 2,430 CROOKED CREEK Confluence with Perkins 6.79 1,854 2,625 2,974 3,825 Creek 190 feet upstream of confluence with Perkins 3.26 1,298 1,909 2,191 2,897 Creek Buckner Lane 2.26 940 1,434 1,643 2,159 1280 feet upstream of 1.96 867 1,270 1,455 1,906 Buckner Lane Pecan Drive 1.78 813 1,187 1,360 1,784 430 feet upstream of US 1.04 527 764 873 1,141 HWY 62 CROSS CREEK Above Illinois Central Gulf 2.02 611 888.4 1,015 1,329 Railroad Yard 25th Street 1.71 582 848 969 1242 South 24th Street 1.48 491 713 814 1,066 350 feet upstream of South 1.28 420 615 704 923 24th Street ISLAND CREEK Above Cross Creek 25.7 4,150 5,580 6,228 7,808 Approximately 14,000 feet upstream of confluence 23.20 3,780 5,040 5,598 7,008 with Tennessee River Approximately 19,000 feet upstream of confluence 20.54 3,380 4,430 4,898 6,108 with Tennessee River Approximately 27,000 feet upstream of confluence 17.81 2,930 3,770 4,318 5,108 with Tennessee River Above Champion Creek 10.10 1,500 1,620 1,668 1,818 At Levee 8.93 1,238 1,238 1,238 1,238 MASSAC CREEK Confluence of Black Branch 38.17 7,260 10,850 12,470 16,560 Section C 32.58 6,580 9,840 11,300 15,000 Above Confluence of 15.21 3,990 5,970 6,860 9,100 Middle Fork Massac Creek At Lovelaceville Road (KY 12.08 3,410 5,090 5,850 7,760 1438) At Clinton Road (KY 1438) 8.00 2,540 3,800 4,360 5,790
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PEAK DISCHARGES (cubic feet per second) 10-Percent 2-Percent- 1-Percent- 0.2-Percent FLOODING SOURCE DRAINAGE Annual Annual- Annual- Annual AND LOCATION AREA (sq. miles) Chance Chance Chance Chance MIDDLE FORK MASSAC
CREEK At confluence with Massac 13.58 3,690 5,520 6,350 8,420 Creek Hines Road 9.63 2,880 4,310 4,960 6,580 Section H 2.62 1,070 1,590 1,830 2,430 At New Hope Church Road 1.54 680 1,020 1,180 1,560 OHIO RIVER Mile 927.9 NA* 877,300 1,094,600 1,185,000 1,396,000 Mile 935 NA* 925,000 1,175,000 1,275,000 1,505,000 PERKINS CREEK 290 feet downstream of KY 13.64 2,980 4,235 4,787 6,264 HWY 305 5000 feet upstream of KY 10.48 2,542 3,563 4,029 5,275 HWY 305 Abandoned Illinois Central 9.4 2,343 3,276 3,708 4,847 Gulf Railroad Illinois Central Gulf 8.47 2,207 3,151 3,576 4,617 Railroad Hinkleville Road 7.33 1,993 2,837 3,217 4,142 941 feet downstream of confluence with Crooked 7.02 1,919 2,724 3,088 3,976 Creek At confluence with Crooked 6.79 1854 2625 2974 3825 Creek 1232 feet upstream of confluence with Crooked 3.53 814 1,175 1,356 1,802 Creek North Friendship Road 2.86 680 996 1,143 1,509 310 feet downstream of 1.88 478 706 812 1,073 Blandville Road 2490 feet upstream of US 1.11 264 384 439 576 HWY 62 TENNESSEE RIVER Mile 3.1 NA+ 388,000 480,000 517,000 600,000 WEST FORK MASSAC
CREEK At confluence with Massac 24.38 5,400 8,110 9,330 12,230 Creek At Railroad 22.78 5,170 7,760 8,930 11,700 Section F 22.78 4,330 5,856 6,185 7,604
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PEAK DISCHARGES (cubic feet per second) 10-Percent 2-Percent- 1-Percent- 0.2-Percent FLOODING SOURCE DRAINAGE Annual Annual- Annual- Annual AND LOCATION AREA (sq. miles) Chance Chance Chance Chance Section H 18.02 4,430 6,640 7,650 10,000 Hinkleville Road (US 60) 12.90 3,520 5,290 6,090 7,980 Section L 7.02 2,280 3,420 3,940 5,160 Above Section P 5.39 1,870 2,810 3,230 4,240 Biggs Road 3.38 1,300 1,960 2,250 2,950 Above Section U 1.68 734 1,100 1,270 1,660 *Drainage Area was not available from the USACE for the Ohio River. +Drainage Area was not available from the USACE/TVA for the Tennessee River.
Discharges for Zone A studies were developed using Regression Equations contained in the USGS report Estimating the Magnitude of Peak Flows for Streams in Kentucky for Selected Recurrence Intervals (Reference 5). Drainage areas along streams were determined using a flow accumulation grid developed from the USGS 10 meter digital elevation models and corrected National Hydrologic Data (NHD) stream coverage. Flow points along stream centerlines were calculated using the regression equations in conjunction with accumulated area for every 10 percent increase in flow along a particular stream.
3.2 Hydraulic Analyses
Analyses of the hydraulic characteristics of flooding from the sources studied were carried out to provide estimates of the elevations of floods of the selected recurrence intervals. Users should be aware that flood elevations shown on the Flood Insurance Rate Map (FIRM) represent rounded whole-foot elevations and may not exactly reflect the elevations shown on the Flood Profiles or in the Floodway Data table in the FIS report. Flood elevations shown on the FIRM are primarily intended for flood insurance rating purposes. For construction and/or floodplain management purposes, users are cautioned to use the flood elevation data presented in this FIS report in conjunction with the data shown on the FIRM.
Water-surface elevations for floods of selected recurrence intervals were computed for Black Branch, Camp Creek, Champion Creek, Island Creek, Massac Creek, Middle Fork Massac Creek and West Fork Massac Creek using USACE HEC-2 step backwater computer program (Reference 9).
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Hydraulic analysis for the Ohio River was performed by the USACE. AMEC converted the HEC-2 model obtained from the USACE for Mound City (mile 918 to mile 981) to a steady state HEC-RAS model.
A HEC-RAS model for the Tennessee River was created using geometry data from and existing Lock and Dam feasibility study performed by the USACE.
Water surface elevations for Cross Creek, Crooked Creek and Perkins Creek were computed using USACE HEC-RAS step backwater computer model (Reference 6).
Roughness coefficients for the streams studied using detailed methods are listed in Table 3. TABLE 3 - MANNING'S “N” VALUES
Flooding Source Channel Overbank Black Branch 0.020 – 0.065 0.070 - 0.085 Camp Creek 0.047 – 0.067 0.040 – 0.150 Champion Creek 0.024 – 0.098 0.035 – 0.075 Crooked Creek 0.03 – 0.055 0.070 – 0.120 Cross Creek 0.035 – 0.040 0.050 – 0.120 Island Creek 0.041 – 0.089 0.070 – 0.110 Massac Creek 0.041 – 0.089 0.070 – 0.110 Middle Fork Massac Creek 0.063 – 0.079 0.120 – 0.130 Ohio River 0.027 – 0.0275 0.100 Perkins Creek 0.035 – 0.055 0.070 – 0.120 Tennessee River 0.027 0.060 West Fork Massac Creek 0.045 – 0.050 0.070 – 0.120
The hydraulic analyses for this study were based on unobstructed flow. The flood elevations shown on the Flood Profiles (Exhibit 1) are thus considered valid only if hydraulic structures remain unobstructed, operate properly, and do not fail.
Cross section data for Black Branch, Camp Creek, Champion Creek, Island Creek, Massac Creek, Middle Fork Massac Creek and West Fork Massac Creek were obtained from aerial photogrammetric surveys. Water sections and sections at hydraulic structures were obtained by field measurements. Cross section data for Crooked Creek, Cross Creek, Ohio River, Perkins Creek and Tennessee River were obtained by field measurements and were located at close intervals above and below bridges in order to compute the backwater effects of these structures in
11 the urbanized areas. Locations of selected cross sections used in the hydraulic analyses are shown on the Flood Profiles (Exhibit 1). For stream segments for which a floodway is computed (Section 4.2), selected cross section locations are also shown on the FIRM.
Flood profiles were drawn showing the computed water-surface elevations for floods of the selected recurrence intervals. In cases where the 1- and 2-percent- annual-chance flood elevations are close together, due to limitations of the profile scale, only the 1-percent-annual-chance profile has been shown.
Of special note is the profile of Island Creek. It was found that flooding elevations on Island Creek were either lower or approximately equal to the 1-percent-annual- chance ponding elevation of 330.4 feet which has previously been calculated by the USACE. This elevation was based on the assumption that levee gates were closed and flood waters from Island Creek had to back up behind the levee (Reference 10). Therefore the ponding elevation is considered to be the 1-percent- annual-chance flood elevation.
Approximate (Zone A) hydraulic modeling was performed using HEC-RAS, version 3.1.2, from the U.S. Army Corps of Engineers, Hydrologic Engineering Center (HEC) (Reference 5). AMEC’s program, Automated Floodplain Generator (AFG), was used to assist in the development of the geometries and resulting floodplains throughout the county. AFG employs methodologies of HEC- GeoRAS, a Geographic Information Systems (GIS) interface developed by HEC for the preparation of hydraulic models. In a GIS environment, the engineer places stream centerline and cross-section cut lines. The bank lines and flow path lines are automatically placed, buffering the stream based on user-specified spacing. The AFG then extracts the vertical elevation from the background topography and creates the input geometry file for the HEC-RAS model. Next, cross-section locations are evaluated in reference to the floodplain boundary and are manually adjusted as necessary. The bank stations, Manning’s n values, and ineffective flow areas are prescribed in the HEC-RAS model. Subsequently, the water surface elevation is extracted from the HEC-RAS model output and a water surface Triangulated Irregular Network (TIN) is created. The floodplain boundary is delineated based on the difference between the water surface TIN and ground surface TIN.
Detail-studied streams that were not re-studied as part of this map update may include a profile base line on the maps. This profile base line provides a link to the flood profiles included in the FIS report. The detail-studied stream centerline may have been digitized or redelineated as part of this revision. The profile base lines for these streams were based on the best available data at the time of their study and are depicted as they were on the previous FIRMs. In some cases where improved topographical data was used to redelineate floodplain boundaries, the profile base line may deviate significantly from the channel centerline or may be outside the SFHA.
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Floodplains were delineated using automated GIS methods. Floodplains were mapped to include backwater effects that govern each flooding source near its downstream extent.
All qualifying benchmarks within a given jurisdiction that are catalogued by the National Geodetic Survey (NGS) and entered into the National Spatial Reference System (NSRS) as First or Second Order Vertical and have a vertical stability classification of A, B or C are shown and labeled on the FIRM with their 6- character NSRS Permanent Identifier.
Benchmarks catalogued by the NGS and entered into the NSRS vary widely in vertical stability classification. NSRS vertical stability classifications are as follows:
• Stability A: Monuments of the most reliable nature, expected to hold position/elevation (e.g., mounted in bedrock)
• Stability B: Monuments which generally hold their position/elevation (e.g., concrete bridge abutment)
• Stability C: Monuments which may be affected by surface ground movements (e.g., concrete monument below frost line)
• Stability D: Mark of questionable or unknown vertical stability (e.g., concrete monument above frost line, or steel witness post)
In addition to NSRS benchmarks, the FIRM may also show vertical control monuments established by a local jurisdiction; these monuments will be shown on the FIRM with the appropriate designations. Local monuments will only be placed on the FIRM if the community has requested that they be included, and if the monuments meet the aforementioned NSRS inclusion criteria.
3.3 Vertical Datum
All FIS reports and FIRMs are referenced to a specific vertical datum. The vertical datum provides a starting point against which flood, ground, and structure elevations can be referenced and compared. Until recently, the standard vertical datum used for newly created or revised FIS reports and FIRMs was the National Geodetic Vertical Datum of 1929 (NGVD). With the completion of the North American Vertical Datum of 1988 (NAVD), many FIS reports and FIRMs are now prepared using NAVD as the referenced vertical datum.
All flood elevations shown in this FIS report and on the FIRM are now referenced to NAVD 88. In order to perform this conversion, effective NGVD 29 elevation values were adjusted upward by 0.04 feet. Structure and ground elevations in the
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community must, therefore, be referenced to NAVD 88. It is important to note that adjacent communities may be referenced to NGVD 29. This may result in differences in base flood elevations across the corporate limits between the communities.
For more information on NAVD 88, see Converting the National Flood Insurance Program to the North American Vertical Datum of 1988, FEMA Publication FIA- 20/June 1992, or contact the National Geodetic Survey at the following address:
Spatial Reference System Division National Geodetic Survey, NOAA Silver Spring Metro Center 3 1315 East-West Highway Silver Spring, Maryland 20910-3282 (301) 713-3242 http://www.ngs.noaa.gov/
Temporary vertical monuments are often established during the preparation of a flood hazard analysis for the purpose of establishing local vertical control. Although these monuments are not shown on the FIRM, they may be found in the Technical Support Data Notebook associated with the FIS report and FIRM for this community. Interested individuals may contact FEMA to access these data.
To obtain current elevation, description, and/or location information for benchmarks shown on this map, please contact the Information Services Branch of the NGS at (301) 713-3242, or visit their website at www.ngs.noaa.gov.
4.0 FLOODPLAIN MANAGEMENT APPLICATIONS
The NFIP encourages State and local governments to adopt sound floodplain management programs. To assist in this endeavor, each FIS report provides 1-percent-annual-chance floodplain data, which may include a combination of the following: 10-, 2-, 1-, and 0.2-percent-annual-chance flood elevations; delineations of the 1- and 0.2-percent-annual-chance floodplains; and a 1-percent-annual-chance floodway. This information is presented on the FIRM and in many components of the FIS report, including Flood Profiles, Floodway Data tables, and Summary of Stillwater Elevation tables. Users should reference the data presented in the FIS report as well as additional information that may be available at the local community map repository before making flood elevation and/or floodplain boundary determinations.
4.1 Floodplain Boundaries
To provide a national standard without regional discrimination, the 1-percent-annual-chance flood has been adopted by FEMA as the base flood for floodplain management purposes. The 0.2-percent-annual-chance flood is employed to indicate additional areas of flood risk in the community.
14
For each stream studied by detailed methods, the 1- and 0.2-percent-annual-chance floodplain boundaries have been delineated using the flood elevations determined at each cross-section. Between cross-sections, the boundaries were interpolated using Topographic information consisted of Digital Elevation Models produced by using 5-foot contour data provided by McCracken County (Reference 2) for most of the County and 10 meter Digital Elevation Models produced by the U.S Geological Survey (USGS) (Reference 1) for parts of the Ohio River corridor.
The 1- and 0.2-percent-annual-chance floodplain boundaries are shown on the FIRM. On this map, the 1-percent-annual-chance floodplain boundary corresponds to the boundary of the areas of special flood hazards (Zone AE and A). In cases where the 1- and 0.2-percent-annual-chance floodplain boundaries are close together, only the 1-percent-annual-chance floodplain boundary has been shown. Small areas within the floodplain boundaries may lie above the flood elevations, but cannot be shown due to limitations of the map scale and/or lack of detailed topographic data.
For the streams studied by approximate methods, only the 1-percent-annual-chance floodplain boundary is shown on the FIRM.
4.2 Floodways
Encroachment on floodplains, such as structures and fill, reduces flood-carrying capacity, increases flood heights and velocities, and increases flood hazards in areas beyond the encroachment itself. One aspect of floodplain management involves balancing the economic gain from floodplain development against the resulting increase in flood hazard. For purposes of the NFIP, a floodway is used as a tool to assist local communities in this aspect of floodplain management. Under this concept, the area of the 1-percent-annual-chance floodplain is divided into a floodway and a floodway fringe. The floodway is the channel of a stream, plus any adjacent floodplain areas, that must be kept free of encroachment so that the base flood can be carried without substantial increases in flood heights. Minimum Federal standards limit such increases to 1 foot, provided that hazardous velocities are not produced. The floodways in this study are presented to local agencies as minimum standards that can be adopted directly or that can be used as a basis for additional floodway studies.
The floodways presented in this study were computed for certain stream segments on the basis of equal-conveyance reduction from each side of the floodplain, while allowing a maximum surcharge of 1.0 ft. Floodway widths were computed at cross sections.
15
Between cross-sections, the floodway boundaries were interpolated. In cases where the floodway and 1-percent-annual-chance floodplain boundaries are either close together or collinear, only the floodway boundary is shown.
The area between the floodway and 1-percent-annual-chance floodplain boundaries is termed the floodway fringe. The floodway fringe encompasses the portion of the floodplain that could be completely obstructed without increasing the water-surface elevation (WSEL) of the base flood more than 1 foot at any point. Typical relationships between the floodway and the floodway fringe and their significance to floodplain development are shown in Figure 1.
FIGURE 1: FLOODWAY SCHEMATIC
Near the mouths of streams studied in detail, floodway computations are made without regard to flood elevations on the receiving water body.
Encroachment into areas subject to inundation by floodwaters having hazardous velocities aggravates the risk of flood damage, and heightens potential flood hazards by further increasing velocities. In order to reduce the risk of property damage in areas where the stream velocities are high, the community may wish to restrict development in areas outside the floodway.
16
BASE FLOOD FLOODING SOURCE FLOODWAY WATER-SURFACE ELEVATION (FEET NAVD 88) SECTION MEAN WIDTH AREA VELOCITY WITHOUT WITH CROSS SECTION DISTANCE1 REGULATORY INCREASE (FEET) (SQUARE (FEET PER FLOODWAY FLOODWAY FEET) SECOND) Black Branch A 4,450 100 499 4.9 346.1 346.1 346.7 0.6 B 7,255 165 751 3.3 354.0 354.0 354.9 0.9 C 9,035 152 384 4.4 359.3 359.3 359.5 0.2 D 11,585 114 565 3.0 368.4 368.4 369.3 0.9 E 12,660 45 334 5.1 372.9 372.9 373.1 0.2 F 15,670 46 300 3.9 385.2 385.2 385.7 0.5 G 17,455 47 281 4.1 390.6 390.6 390.7 0.1
1Distance above confluence with Massac Creek
FEDERAL EMERGENCY MANAGEMENT AGENCY TABLE 4
FLOODWAY DATA
MCCRACKEN COUNTY, KY AND INCORPORATED AREAS BLACK BRANCH
17
BASE FLOOD FLOODING SOURCE FLOODWAY WATER-SURFACE ELEVATION
(FEET NAVD 88)
SECTION MEAN
WIDTH AREA VELOCITY WITHOUT WITH CROSS SECTION DISTANCE1 REGULATORY INCREASE (FEET) (SQUARE (FEET PER FLOODWAY FLOODWAY FEET) SECOND) Camp Creek A 22,600 543 1,822 2.6 351.5 351.5 352.5 1.0 B 24,250 973/4112 3,003 1.3 353.7 353.7 354.6 0.9 2 C 26,538 1,100/299 3,864 1.0 357.3 357.3 358.2 0.9 D 29,505 700/242 2,060 1.2 362.4 362.4 363.4 1.0 E 30,698 170 474 4.8 366.5 366.5 367.4 1.0 F 33,352 491 1,821 1.2 374.0 374.0 375.0 1.0 G 34,700 350 1,566 1.4 374.7 374.7 375.7 1.0 H 38,340 109 295 5.0 386.6 386.6 387.5 0.9 I 41,920 36 161 5.2 400.6 400.6 400.8 0.2
1Distance above confluence with West Fork Clarks River 2 Width/width within County FEDERAL EMERGENCY MANAGEMENT AGENCY TABLE 4
FLOODWAY DATA MCCRACKEN COUNTY, KY
AND INCORPORATED AREAS CAMP CREEK
18
BASE FLOOD FLOODING SOURCE FLOODWAY WATER-SURFACE ELEVATION (FEET NAVD 88) SECTION MEAN WIDTH AREA VELOCITY WITHOUT WITH CROSS SECTION DISTANCE1 REGULATORY INCREASE (FEET) (SQUARE (FEET PER FLOODWAY FLOODWAY FEET) SECOND) Champion Creek A 3,485 779 2,880 1.4 335.1 335.1 335.6 0.5 B 4,367 735 3,101 1.3 335.3 335.3 335.9 0.6 C 5,767 456 1,048 3.9 336.2 336.2 337.0 0.8 D 7,530 808 2,070 2.0 342.0 342.0 343.0 1.0 E 8,965 1,268 2,091 1.8 347.2 347.2 348.2 1.0 F 11,497 510 863 2.6 357.4 357.4 358.4 1.0 G 14,020 190 660 2.6 367.0 367.0 367.9 0.9
1 Distance above confluence with Island Creek
FEDERAL EMERGENCY MANAGEMENT AGENCY
TABLE 4
FLOODWAY DATA
MCCRACKEN COUNTY, KY AND INCORPORATED AREAS CHAMPION CREEK
19
BASE FLOOD FLOODING SOURCE FLOODWAY WATER-SURFACE ELEVATION (FEET NAVD) SECTION MEAN WIDTH AREA VELOCITY WITHOUT WITH CROSS SECTION DISTANCE1 REGULATORY INCREASE (FEET) (SQUARE (FEET PER FLOODWAY FLOODWAY FEET) SECOND) Crooked Creek A 3,982 98 352 4.1 375.9 375.9 376.0 0.1 B 4,974 86 315 4.6 378.4 378.4 378.8 0.4 C 9,633 39 245 3.6 396.8 396.8 396.8 0.0 D 10,617 52 242 3.6 402.1 402.1 402.1 0.0
1Feet above confluence with Perkins Creek
FEDERAL EMERGENCY MANAGEMENT AGENCY TABLE 4
FLOODWAY DATA MCCRACKEN COUNTY, KY AND INCORPORATED AREAS CROOKED CREEK
20
BASE FLOOD FLOODING SOURCE FLOODWAY WATER-SURFACE ELEVATION (FEET NAVD) SECTION MEAN WIDTH AREA VELOCITY WITHOUT WITH CROSS SECTION DISTANCE1 REGULATORY INCREASE (FEET) (SQUARE (FEET PER FLOODWAY FLOODWAY FEET) SECOND) Cross Creek A 4,171 34 349 2.8 332.6 332.6 332.6 0.0 B 6,080 76 444 2.2 334.9 334.9 335.0 0.1 C 7,280 98 416 2.0 335.9 335.9 336.4 0.5
D 8,412 34 138 5.9 337.8 337.8 337.9 0.1 E 8,944 50 218 3.7 340.4 340.4 340.6 0.2
1 Feet above a point 1440 feet downstream of Mallory Street
FEDERAL EMERGENCY MANAGEMENT AGENCY TABLE 4
FLOODWAY DATA CROSS CREEK, KY AND INCORPORATED AREAS CROSS CREEK
21
BASE FLOOD FLOODING SOURCE FLOODWAY WATER-SURFACE ELEVATION (FEET NAVD 88) SECTION MEAN WIDTH AREA VELOCITY WITHOUT WITH CROSS SECTION DISTANCE1 REGULATORY INCREASE (FEET) (SQUARE (FEET PER FLOODWAY FLOODWAY FEET) SECOND) Massac Creek A 27,830 1,058 3,348 3.4 337.5 336.92 337.92 1.0 B 29,750 1,442 5,407 2.1 340.3 340.3 341.0 0.7 C 31,780 843 4,029 2.8 342.0 342.0 342.8 0.8 D 35,581 557 2,165 5.2 347.2 347.2 348.0 0.8 E 37,616 1,228 5,747 2.0 350.3 350.3 351.3 1.0 F 39,486 903 3,402 3.3 351.2 351.2 352.2 1.0 G 42,191 795 3,248 2.1 355.9 355.9 356.9 1.0 H 49,276 1,105 3,221 2.1 366.3 366.3 367.2 0.9 I 51,676 1,120 4,110 1.7 369.8 369.8 370.7 0.9 J 53,991 901 3,968 1.7 373.8 373.8 374.7 0.9 K 54,861 414 2,154 3.2 375.7 375.7 376.7 1.0 L 56,796 1,116 7,568 0.8 381.1 381.1 382.0 0.9 M 58,186 925 3,111 1.9 383.4 383.4 384.4 1.0
1 Feet above confluence with Ohio River 2 Water-surface elevation computed without consideration of backwater effects from Ohio River
FEDERAL EMERGENCY MANAGEMENT AGENCY
TABLE 4 FLOODWAY DATA
MCCRACKEN COUNTY, KY AND INCORPORATED AREAS MASSAC CREEK
22
BASE FLOOD FLOODING SOURCE FLOODWAY WATER-SURFACE ELEVATION
(FEET NAVD 88) SECTION MEAN WIDTH AREA VELOCITY WITHOUT WITH CROSS SECTION DISTANCE1 REGULATORY INCREASE (FEET) (SQUARE (FEET PER FLOODWAY FLOODWAY FEET) SECOND) Middle Fork Massac Creek A 2,541 850 2,092 3.0 354.2 353.72 354.22 0.5 B 4,571 86 3,942 1.6 357.0 357.0 357.6 0.6 C 6,820 398 2,302 2.8 361.7 361.4 362.4 1.0 D 11,201 1,215 5,326 1.2 371.8 371.8 372.7 0.9 E 12,861 837 2,889 2.2 373.8 373.8 374.8 1.0 F 13,901 982 3,399 1.9 376.3 376.3 377.3 1.0 G 18,571 99 909 5.5 387.1 387.1 387.7 0.6 H 20,460 561 2,207 0.8 390.9 390.9 391.7 0.8 I 21,350 298 641 2.9 392.3 392.3 392.9 0.6 J 22,450 356 903 2.0 397.3 397.3 397.9 0.6 K 24,080 32 259 7.1 404.1 404.1 404.5 0.4 L 25,830 51 379 4.8 411.2 411.2 411.7 0.5
1 Feet above confluence with Massac Creek 2Water-surface elevation computed without considering backwater effects from Massac Creek
FEDERAL EMERGENCY MANAGEMENT AGENCY TABLE 4
FLOODWAY DATA MCCRACKEN COUNTY, KY
AND INCORPORATED AREAS MIDDLE FORK MASSAC CREEK
23
BASE FLOOD FLOODING SOURCE FLOODWAY WATER-SURFACE ELEVATION (FEET NAVD 88) SECTION MEAN WIDTH AREA VELOCITY WITHOUT WITH CROSS SECTION DISTANCE1 REGULATORY INCREASE (FEET)2 (SQUARE (FEET PER FLOODWAY FLOODWAY FEET) SECOND) Ohio River A 956.00 6,372/4,074 298,830 4.3 334.5 334.5 335.4 0.9 B 955.00 6,280/5,828 291,361 4.4 334.7 334.7 335.6 0.9 C 954.00 6,453/6,125 278,525 4.6 334.8 334.8 335.7 0.9 D 953.00 6,000/5,974 257,736 5 335.0 335.0 335.9 0.9 E 952.00 4,982/4,907 251,786 5.1 335.3 335.3 336.2 0.9 F 951.00 5,000/4,837 249,137 5.1 335.6 335.6 336.4 0.8 G 950.00 4,813/4,330 251,842 5.1 335.8 335.8 336.7 0.9 H 949.00 4,753/4,460 261,912 4.9 336.1 336.1 337.0 0.9 I 948.00 4,535/4.140 251,078 5.1 336.3 336.3 337.2 0.9 J 947.00 4,210/3,486 242,576 5.3 336.5 336.5 337.4 0.9 K 946.00 4,354/3,106 252,292 5.1 336.8 336.8 337.7 0.9 L 945.00 3,690/3,035 226,667 5.6 336.9 336.9 337.9 1.0 M 944.11 2,810 203,597 6.3 337.1 337.1 338.0 0.9 N 943.00 4,745/4,627 231,692 5.5 337.3 337.3 338.2 0.9 O 942.00 5,000/4,253 257,071 5 337.8 337.8 338.7 0.9 P 941.00 5,000/4,839 262,536 4.9 338.0 338.0 338.9 0.9 Q 940.00 5,250/4,972 265,159 4.8 338.2 338.2 339.1 0.9 R 939.00 4,594/4,436 254,493 5 338.4 338.4 339.3 0.9 S 938.00 4,942/4,339 238,653 5.3 338.7 338.7 339.7 1.0 T 937.00 5,909/4,942 283,921 4.5 339.1 339.1 340.1 1.0 U 936.00 7,112/4,108 300,173 4.3 339.3 339.3 340.3 1.0 1Stream distance in miles below Pittsburgh 2Width/width within County
FEDERAL EMERGENCY MANAGEMENT AGENCY
TABLE 4 FLOODWAY DATA MCCRACKEN COUNTY, KY
AND INCORPORATED AREAS
OHIO RIVER
24
BASE FLOOD FLOODING SOURCE FLOODWAY WATER-SURFACE ELEVATION (FEET NAVD 88) SECTION MEAN WIDTH AREA VELOCITY WITHOUT WITH CROSS SECTION DISTANCE1 REGULATORY INCREASE (FEET) 2 (SQUARE (FEET PER FLOODWAY FLOODWAY FEET) SECOND) V 935.00 7,832/3,649 311,095 4.1 339.5 339.5 340.5 1.0 W 933.90 12,004/4,168 347,520 3.4 339.7 339.7 340.6 0.9 X 932.90 14,636/2,982 395,499 3 340.2 340.2 341.1 0.9
1Stream distance in miles below Pittsburgh 2Width/width within County
FEDERAL EMERGENCY MANAGEMENT AGENCY TABLE 4 FLOODWAY DATA
MCCRACKEN COUNTY, KY AND INCORPORATED AREAS OHIO RIVER
25
BASE FLOOD FLOODING SOURCE FLOODWAY WATER-SURFACE ELEVATION (FEET NAVD) SECTION MEAN WIDTH AREA VELOCITY WITHOUT WITH CROSS SECTION DISTANCE1 REGULATORY INCREASE (FEET) (SQUARE (FEET PER FLOODWAY FLOODWAY FEET) SECOND) Perkins Creek A 27,618 162 813 4.6 342.1 342.1 342.3 0.2 B 35,436 120 700 5.1 353.8 353.8 354.5 0.7 C 37,392 86 681 4.7 359.4 359.4 359.5 0.1 D 39,811 127 864 3.6 361.9 361.9 362.9 1.0 E 45,311 58 250 4.6 372.8 372.8 373.0 0.2 F 48,279 42 195 5.9 380.6 380.6 380.6 0.0 G 50,047 61 229 3.5 386.8 386.8 387.2 0.4 H 52,398 58 190 4.3 396.2 396.2 396.3 0.1
1Feet above confluence with Ohio River
FEDERAL EMERGENCY MANAGEMENT AGENCY TABLE 4
FLOODWAY DATA MCCRACKEN COUNTY, KY
AND INCORPORATED AREAS PERKINS CREEK
26
BASE FLOOD FLOODING SOURCE FLOODWAY WATER-SURFACE ELEVATION (FEET NAVD 88) SECTION MEAN
1 WIDTH AREA VELOCITY WITHOUT WITH CROSS SECTION DISTANCE 2 REGULATORY INCREASE (FEET) (SQUARE (FEET PER FLOODWAY FLOODWAY
FEET) SECOND) Tennessee River 3 A 3.1 6,000/2,324 176,490 2.9 340.5 339.5 340.3 0.8 B 5.3 2,830/700 112,046 4.6 340.7 339.73 340.6 0.9 C 7.8 3,820/1,011 130,380 4.0 341.1 340.53 341.3 0.8
1Stream distance in miles above confluence with Ohio River 2Width/width within County 3 Elevation computed without consideration of overflow effects from Ohio River
FEDERAL EMERGENCY MANAGEMENT AGENCY TABLE 4 FLOODWAY DATA
MCCRACKEN COUNTY, KY AND INCORPORATED AREAS TENNESSEE RIVER
27
BASE FLOOD FLOODING SOURCE FLOODWAY WATER-SURFACE ELEVATION (FEET NAVD 88) SECTION MEAN WIDTH AREA VELOCITY WITHOUT WITH CROSS SECTION DISTANCE1 REGULATORY INCREASE (FEET) (SQUARE (FEET PER FLOODWAY FLOODWAY
FEET) SECOND) West Fork Massac Creek A 7,400 313 1,867 5.0 340.5 340.5 340.8 0.3 B 7,675 448 1,473 6.1 341.5 341.5 342.1 0.6 C 10,480 772 3,407 2.6 345.8 345.8 346.3 0.5 D 12,640 940 3,725 2.4 348.2 348.2 349.1 0.9 E 14,606 864 2,570 3.5 351.6 351.6 352.5 0.9 F 16,355 710 4,410 1.4 353.7 353.7 354.6 0.9 G 18,279 168 951 6.5 356.7 356.7 357.2 0.5 H 20,654 886 3,179 2.4 362.2 362.2 362.9 0.7 I 23,579 361 2,024 3.8 367.1 367.1 367.9 0.8 J 27,079 1,374 4,139 1.8 372.1 372.1 373.0 0.9 K 30,309 1,036 3,919 1.6 377.1 377.1 378.0 0.9 L 32,809 535 1,678 2.3 379.4 379.4 380.0 0.6 M 33,749 1,240 4,812 0.8 381.9 381.9 382.6 0.7 N 35,439 524 1,776 2.2 384.8 384.8 385.6 0.8 O 36,589 849 3,211 1.2 387.6 387.6 388.5 0.9 P 38,849 290 719 5.5 390.4 390.4 391.0 0.6 Q 41,373 344 1,295 2.5 398.8 398.8 399.6 0.8 R 43,677 728 1,351 2.4 404.0 404.0 404.7 0.7 S 45,978 162 708 4.6 410.8 410.8 411.5 0.7 T 48,564 42 368 6.1 416.6 416.6 417.5 0.9 U 50,784 121 557 4.0 426.5 426.5 427.3 0.8 V 52,924 39 279 4.6 432.7 432.7 433.2 0.5 1 Distance above confluence with Massac Creek
FEDERAL EMERGENCY MANAGEMENT AGENCY
TABLE 4 FLOODWAY DATA MCCRACKEN COUNTY, KY
AND INCORPORATED AREAS WEST FORK MASSAC CREEK
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5.0 INSURANCE APPLICATION
For flood insurance rating purposes, flood insurance zone designations are assigned to a community based on the results of the engineering analyses. These zones are as follows:
Zone A
Zone A is the flood insurance rate zone that corresponds to the 1-percent-annual-chance floodplains that are determined in the FIS report by approximate methods. Because detailed hydraulic analyses are not performed for such areas, no base (1-percent-annual-chance) flood elevations (BFEs) or depths are shown within this zone.
Zone AE
Zone AE is the flood insurance risk zone that corresponds to the 1-percent-annual-chance floodplains that are determined in the FIS by detailed methods. In most instances, whole- foot BFEs derived from the detailed hydraulic analyses are shown at selected intervals within this zone.
Zone X
Zone X is the flood insurance rate zone that corresponds to areas outside the 0.2-percent-annual-chance floodplain, areas within the 0.2-percent-annual-chance floodplain, areas of 1-percent-annual-chance flooding where average depths are less than 1 foot, areas of 1-percent-annual-chance flooding where the contributing drainage area is less than 1 square mile (sq. mi.), and areas protected from the base flood by levees. No BFEs or depths are shown within this zone.
29
6.0 FLOOD INSURANCE RATE MAP
The FIRM is designed for flood insurance and floodplain management applications.
For flood insurance applications, the map designates flood insurance rate zones as described in Section 5.0 and, in the 1-percent-annual-chance floodplains that were studied by detailed methods, shows selected whole-foot BFEs or average depths. Insurance agents use zones and BFEs in conjunction with information on structures and their contents to assign premium rates for flood insurance policies.
For floodplain management applications, the map shows by tints, screens, and symbols, the 1- and 0.2-percent-annual-chance floodplains, floodways, and the locations of selected cross sections used in the hydraulic analyses and floodway computations.
The countywide FIRM presents flooding information for the entire geographic area of McCracken County. Previously, FIRMs were prepared for each incorporated community and the unincorporated areas of the County identified as flood-prone. This countywide FIRM also includes flood-hazard information that was presented separately on Flood Boundary and Floodway Maps (FBFMs), where applicable. Historical data relating to the maps prepared for each community are presented in Table 5, “Community Map History.”
30
FLOOD HAZARD INITIAL COMMUNITY NAME BOUNDARY MAP FIRM EFFECTIVE DATE FIRM REVISIONS DATE IDENTIFICATION REVISIONS DATE
June 13, 1975 None April 15, 1980 February 12, 1982 Paducah, City of
McCracken County December 6, 1974 June 24, 1977 June 4, 1980 None (Unincorporated Areas)
TABLE 5 TABLE FEDERAL EMERGENCY MANAGEMENT AGENCY
MCCRACKEN COUNTY, KY COMMUNITY MAP HISTORY AND INCORPORATED AREAS
31
7.0 OTHER STUDIES
This FIS report either supersedes or is compatible with all previous studies published on streams studied in this report and should be considered authoritative for the purposes of the NFIP.
8.0 LOCATION OF DATA
Information concerning the pertinent data used in the preparation of this study can be obtained by contacting Federal Insurance and Mitigation Division, FEMA Region IV, Koger-Center - Rutgers Building, 3003 Chamblee Tucker Road, Atlanta, GA 30341.
Future revisions may be made that do not result in the republishing of the Flood Insurance Study report. To ensure that any user is aware of all revisions, it is advisable to contact the map repository of flood hazard data located in the community.
9.0 BIBLIOGRAPHY AND REFERENCES
1. U. S. Geological Survey, 7.5 Minute Series (Topographic) Maps, Scale: 1:24,000. The National Elevation Dataset (NED) 1/3 Arc Second is a raster product assembled by the U.S. Geological Survey (USGS). NED 1/3 Arc Second is designed to provide National elevation data in a seamless form with a consistent datum, elevation unit, and projection. Data corrections are made in the NED 1/3 Arc Second assembly process to minimize, but not eliminate, artifacts, perform edge matching, and fill sliver areas of missing data. NED 1/3 Arc Second has a resolution of 1/3 arc-second (approximately 10 meters). Projection is geographic, horizontal datum is NAD83 and vertical datum is NAVD88. 2004.
2. 2-foot contours, scale 1” = 200’ (McCracken County). Horizontal datum is NAD83, Geoid Model is GEOID03, US Feet, and vertical datum is NAVD88.
3. MyKentuckyGenealogy http://www.mykentuckygenealogy.com/ky_county/hi.htm
4. Cabinet for Economic Development, Kentucky Quick Facts. http://www.thinkkentucky.com. Last updated July 28, 2008.
5. U.S. Geological Survey, Technique for Estimating Magnitude and Frequency of Floods in Kentucky, Water Resources Investigations 76-62, Nov. 1976.
6. U.S. Army Corps of Engineers, Hydrologic Engineering Center, "River Analysis System," HEC-RAS, Version 3.1.2 Computer Program, revised April 2004.
7. U.S Geological Survey, “Technique for Estimating Magnitude and Frequency of Floods in Kentucky,” Water Resources Investigation 76-62, November 1976.
32
8. U.S Army Corps of Engineers, Louisville District, Flood Plain Information- Ohio River and Tributaries-McCracken County, Kentucky, April 1968.
9. U.S. Army Corps of Engineers, Hydrologic Engineer Center, HEC-2 Water Surface Profiles, Davis, California, November 1976.
10. U.S. Army Corps of Engineers, Louisville District, Floodplain Information- Ohio River and Tributaries- McCracken County, Kentucky, April 1968.
33
400 400
1% ANNUAL CHANCE OVERFLOW EFFECTS FROM MASSAC CREEK
390 390 US HIGHWAY 60 USHIGHWAY MASSAC CREEK
380 CONFLUENCEWITH 380 STATE HIGHWAY 1565 HIGHWAY STATE STATE HIGHWAY 3520 HIGHWAY STATE
370 370
FLOOD PROFILES
BLACK BRANCH BLACK
360 360
350 350
ELEVATION IN FEET(NAVD88) ELEVATION AAAA
340 340
C ,
330 330 LEGEND
AAAA 0.2% ANNUAL CHANCE FLOOD 1% ANNUAL CHANCE FLOOD
2% ANNUAL CHANCE FLOOD 320 10% ANNUAL CHANCE FLOOD
STREAM BED AAAA AREAS INCORPORATED AND
A B KY MCCRACKEN COUNTY, ,
, A CROSS SECTION LOCATION
FEDERAL EMERGENCY MANAGEMENT AGENCY EMERGENCY MANAGEMENT FEDERAL , 310 0 1,000 2,000 3,000 4,000 5,000 6,000 7,000 8,000 9,000 10,000 11,000 12,000
STREAM DISTANCE IN FEET ABOVE CONFLUENCE WITH MASSAC CREEK 01P 430 430
420 420 LIMIT LIMIT OF RAILROAD DETAILED STUDY DETAILED LIGHTFOOT ROAD BUCHANAN ROAD
410 786 HIGHWAY STATE 410
400 400
FLOOD PROFILES
BLACK BRANCH
390 390
380 380 ELEVATION IN FEET (NAVD88) ELEVATION AAAA
370 370
360 360 LEGEND
AAAA 0.2% ANNUAL CHANCE FLOOD 1% ANNUAL CHANCE FLOOD
2% ANNUAL CHANCE FLOOD 350 10% ANNUAL CHANCE FLOOD
STREAM BED AAAA AND INCORPORATEDAREAS
D E F G MCCRACKEN KY COUNTY,
, , , , A CROSS SECTION LOCATION
FEDERAL EMERGENCY MANAGEMENTAGENCY , 340 10,000 11,000 12,000 13,000 14,000 15,000 16,000 17,000 18,000
STREAM DISTANCE IN FEET ABOVE CONFLUENCE WITH MASSAC CREEK 02P 375 375
370 370 LIMIT LIMIT OF DETAILED STUDY DETAILED
365 348 HIGHWAY STATE 365
360 360
CAMP CREEKCAMP
FLOOD PROFILES
355 355
350 350 ELEVATION IN FEET (NAVD88) ELEVATION
AAAA 345 345
C ,
340 340 AAAA LEGEND
0.2% ANNUAL CHANCE FLOOD
1% ANNUAL CHANCE FLOOD
2% ANNUAL CHANCE FLOOD 335 10% ANNUAL CHANCE FLOOD
STREAM BED AAAA AND INCORPORATEDAREAS
A B MCCRACKEN KY COUNTY,
, , A CROSS SECTION LOCATION
FEDERAL EMERGENCY MANAGEMENTAGENCY , 330 20,500 21,000 21,500 22,000 22,500 23,000 23,500 24,000 24,500 25,000 25,500 26,000 26,500 27,000
STREAM DISTANCE IN FEET ABOVE CONFLUENCE WITH WEST FORK CLARKS RIVER 03P 385 385
380 380
RAILROAD
375 994 HIGHWAY STATE 375
370 370
CAMP CREEK CAMP
FLOOD PROFILES
365 365
AAAA
360 360 ELEVATION IN FEET(NAVD88) ELEVATION
355 355
F ,
350 350 LEGEND
AAAA 0.2% ANNUAL CHANCE FLOOD 1% ANNUAL CHANCE FLOOD
2% ANNUAL CHANCE FLOOD 345 10% ANNUAL CHANCE FLOOD
STREAM BED AAAA AREAS INCORPORATED AND
D E KY MCCRACKEN COUNTY,
, , A CROSS SECTION LOCATION
FEDERAL EMERGENCY MANAGEMENT AGENCY EMERGENCY MANAGEMENT FEDERAL , 340 27,000 27,500 28,000 28,500 29,000 29,500 30,000 30,500 31,000 31,500 32,000 32,500 33,000 33,500
STREAM DISTANCE IN FEET ABOVE CONFLUENCE WITH WEST FOR CLARKS RIVER 04P 405 405
400 400
395 395
390 390
CAMP CREEK CAMP
FLOODPROFILES
385 385
380 380 AAAA ELEVATION IN FEET (NAVD88) ELEVATION
375 375
370 370 LEGEND
0.2% ANNUAL CHANCE FLOOD AAAA 1% ANNUAL CHANCE FLOOD 2% ANNUAL CHANCE FLOOD 365 10% ANNUAL CHANCE FLOOD
STREAM BED AAAA AREAS AND INCORPORATED
G H MCCRACKEN KY COUNTY,
, , A CROSS SECTION LOCATION
FEDERAL EMERGENCY MANAGEMENTAGENCY , 360 33,500 34,000 34,500 35,000 35,500 36,000 36,500 37,000 37,500 38,000 38,500 39,000 39,500 40,000
STREAM DISTANCE IN FEET ABOVE CONFLUENCE WITH WEST FORK CLARKS RIVER 05P 420 420
415 415 LIMIT LIMIT OF DETAILED STUDY DETAILED
410 OLD HOUSER ROAD 410
405 405
CAMP CREEK CAMP
FLOOD PROFILES
400 400
395 AAAA 395 ELEVATION IN FEET(NAVD88) ELEVATION
390 390
385 385 LEGEND AAAA
0.2% ANNUAL CHANCE FLOOD
1% ANNUAL CHANCE FLOOD
2% ANNUAL CHANCE FLOOD 380 10% ANNUAL CHANCE FLOOD
STREAM BED AAAA AREAS INCORPORATED AND
I KY MCCRACKEN COUNTY,
, A CROSS SECTION LOCATION
FEDERAL EMERGENCY MANAGEMENT AGENCY EMERGENCY MANAGEMENT FEDERAL , 375 39,000 39,500 40,000 40,500 41,000 41,500 42,000 42,500 43,000
STREAM DISTANCE IN FEET ABOVE CONFLUENCE WITH WEST FORK CLARKS RIVER 06P 360 360
1% ANNUAL CHANCE BACKWATER EFFECTS FROM ISLAND CREEK
355 355
RAILROAD ISLANDCREEK
350 CONFLUENCEWITH 350
345 345
FLOOD PROFILES
CHAMPION CREEK CHAMPION
340 340
335 335 ELEVATION IN FEET(NAVD88) ELEVATION
330 330
AAAA
325 325 LEGEND
0.2% ANNUAL CHANCE FLOOD
1% ANNUAL CHANCE FLOOD
2% ANNUAL CHANCE FLOOD 320 AAAA 10% ANNUAL CHANCE FLOOD
STREAM BED AAAA AREAS INCORPORATED AND
A B KY MCCRACKEN COUNTY,
, , A CROSS SECTION LOCATION
FEDERAL EMERGENCY MANAGEMENT AGENCY EMERGENCY MANAGEMENT FEDERAL , 315 0 500 1,000 1,500 2,000 2,500 3,000 3,500 4,000 4,500 5,000
STREAM DISTANCE IN FEET ABOVE CONFLUENCE WITH ISLAND CREEK 07P 370 370
365 365
360 994 HIGHWAY STATE 360
355 355
FLOOD PROFILES
CHAMPION CREEK CHAMPION
350 350
345 345 ELEVATION IN FEET(NAVD88) ELEVATION
AAAA
340 340
CULVERT
335 335 LEGEND
0.2% ANNUAL CHANCE FLOOD
1% ANNUAL CHANCE FLOOD
2% ANNUAL CHANCE FLOOD 330 AAAA 10% ANNUAL CHANCE FLOOD
STREAM BED AAAA AREAS INCORPORATED AND
C D E KY MCCRACKEN COUNTY,
, , , A CROSS SECTION LOCATION
FEDERAL EMERGENCY MANAGEMENT AGENCY EMERGENCY MANAGEMENT FEDERAL , 325 5,000 5,500 6,000 6,500 7,000 7,500 8,000 8,500 9,000 9,500 10,000
STREAM DISTANCE IN FEET ABOVE CONFLUENCE WITH ISLAND CREEK 08P 385 385
380 380 LIMIT LIMIT OF
375 STUDY DETAILED 375 CLARK LINEROAD WEST
370 370
FLOOD PROFILES
CHAMPION CREEK CHAMPION
365 365
360 360 ELEVATION IN FEET(NAVD88) ELEVATION
AAAA 355 355
350 350 LEGEND
0.2% ANNUAL CHANCE FLOOD
1% ANNUAL CHANCE FLOOD
2% ANNUAL CHANCE FLOOD 345 AAAA 10% ANNUAL CHANCE FLOOD STREAM BED AAAA AREAS INCORPORATED AND
F G KY MCCRACKEN COUNTY,
, , A CROSS SECTION LOCATION
FEDERAL EMERGENCY MANAGEMENT AGENCY EMERGENCY MANAGEMENT FEDERAL , 340 10,000 10,500 11,000 11,500 12,000 12,500 13,000 13,500 14,000 14,500
STREAM DISTANCE IN FEET ABOVE CONFLUENCE WITH ISLAND CREEK 09P 395 395 1% ANNUAL CHANCE BACKWATER EFFECTS FROM PERKINS CREEK
390 390 PECANDRIVE
BUCKNERLANE PERKINSCREEK
385 CONFLUENCEWITH 385
380 380
FLOOD PROFILES
CROOKED CREEK CROOKED
375 375 CULVERT
AAAA 370 370 ELEVATION IN FEET(NAVD88) ELEVATION PECANDRIVE 365 365
B ,
360 360 LEGEND
0.2% ANNUAL CHANCE FLOOD
1% ANNUAL CHANCE FLOOD
2% ANNUAL CHANCE FLOOD 355 AAAA 10% ANNUAL CHANCE FLOOD
STREAM BED AAAA AREAS INCORPORATED AND
A KY MCCRACKEN COUNTY,
, A CROSS SECTION LOCATION
FEDERAL EMERGENCY MANAGEMENT AGENCY EMERGENCY MANAGEMENT FEDERAL , 350 0 500 1,000 1,500 2,000 2,500 3,000 3,500 4,000 4,500 5,000 5,500 6,000 6,500
STREAM DISTANCE IN FEET ABOVE CONFLUENCE WITH PERKINS CREEK 10P 415 415
410 410
405 CHURCHENTRANCE 405
400 400
FLOOD PROFILES
CROOKED CREEK CROOKED
395 395
390 390 ELEVATION IN FEET(NAVD88) ELEVATION
CULVERT
385 385
380 380 LEGEND
0.2% ANNUAL CHANCE FLOOD
1% ANNUAL CHANCE FLOOD
2% ANNUAL CHANCE FLOOD 375 24 USINTERSTATE AAAA 10% ANNUAL CHANCE FLOOD STREAM BED AAAA AREAS INCORPORATED AND
MCCRACKEN COUNTY, KY MCCRACKEN COUNTY, A CROSS SECTION LOCATION
FEDERAL EMERGENCY MANAGEMENT AGENCY EMERGENCY MANAGEMENT FEDERAL , 370 6,500 7,000 7,500 8,000 8,500 9,000 9,500 10,000 10,500 11,000 11,500 12,000 12,500 13,000
STREAM DISTANCE IN FEET ABOVE CONFLUENCE WITH PERKINS CREEK 11P 425 425
420 420 LIMIT LIMIT OF DETAILED STUDY DETAILED 415 415
410 410
FLOOD PROFILES
CROOKED CREEK CROOKED
405 405
400 400 ELEVATION IN FEET(NAVD88) ELEVATION
395 395
CULVERT
390 390 LEGEND
0.2% ANNUAL CHANCE FLOOD AAAA 1% ANNUAL CHANCE FLOOD
US HIGHWAY 62 USHIGHWAY 2% ANNUAL CHANCE FLOOD 385 10% ANNUAL CHANCE FLOOD
STREAM BED AAAA AREAS INCORPORATED AND
C D KY MCCRACKEN COUNTY,
, , A CROSS SECTION LOCATION
FEDERAL EMERGENCY MANAGEMENT AGENCY EMERGENCY MANAGEMENT FEDERAL , 380 9,000 9,500 10,000 10,500 11,000 11,500 12,000 12,500 13,000 13,500 14,000 14,500 15,000 15,500
STREAM DISTANCE IN FEET ABOVE CONFLUENCE WITH PERKINS CREEK 12P 390 390
1% ANNUAL CHANCE PONDING
380 380 US HIGHWAY 60 USHIGHWAY
RAILROADYARD MAYFIELD ROAD MAYFIELD 370 370
SOUTH 25THSTREET SOUTH 24THSTREET
PEDESTRIANBRIDGE
LIMIT OF DETAILED LIMIT STUDYOF DETAILED
360 360
CROSS CREEK CROSS
FLOOD PROFILES
350 350
340 340 ELEVATION IN FEET(NAVD88) ELEVATION
330 330
AAAA
CULVERT D E , ,
320 CULVERT 320 AAAA LEGEND
0.2% ANNUAL CHANCE FLOOD
1% ANNUAL CHANCE FLOOD
2% ANNUAL CHANCE FLOOD 310 10% ANNUAL CHANCE FLOOD
STREAM BED AAAA AREAS INCORPORATED AND
A B C KY MCCRACKEN COUNTY,
, , , A CROSS SECTION LOCATION
FEDERAL EMERGENCY MANAGEMENT AGENCY EMERGENCY MANAGEMENT FEDERAL , 300 3,000 3,500 4,000 4,500 5,000 5,500 6,000 6,500 7,000 7,500 8,000 8,500 9,000 9,500
STREAM DISTANCE IN FEET ABOVE A POINT 1440 FEET DOWNSTREAM OF MALLORY STREET 13P "330355 "330355
350 "325350 "325 TRIBUTARY 1 TRIBUTARY ISLANDCREEK 345 "345320 CONFLUENCEWITH "320
"315340 "315340
ISLAND CREEK ISLAND
FLOOD PROFILES
"310335 "310335
100 YEAR PONDING 330305 305330 " 10 YEAR PONDING " ELEVATION IN FEET(NAVD88) ELEVATION
"300325 "300325
295 AAAA 295 AAAA LEGEND
0.2% ANNUAL CHANCE FLOOD* 1% ANNUAL CHANCE FLOOD
10%2% ANNUAL ANNUAL CHANCE CHANCE FLOOD FLOOD 290 10% ANNUAL CHANCE FLOOD
FLOODGATE STREAM BED AAAA AREAS INCORPORATED AND
MCCRACKEN COUNTY, KY MCCRACKEN COUNTY, A CROSS SECTION LOCATION
FEDERAL EMERGENCY MANAGEMENT AGENCY EMERGENCY MANAGEMENT FEDERAL , 285 0 500 1,000 1,500 2,000 2,500 3,000 3,500 4,000 4,500 5,000 5,500 6,000 6,500
STREAM DISTANCE IN FEET ABOVE CONFLUENCE WITH TENNESSEE RIVER * No data is available 14P 330 330 "345 "345
"340325 "340325
"320335 "335320
100 YEAR PONDING 315330 315330 " 10 YEAR PONDING "
ISLAND CREEK ISLAND
FLOOD PROFILES
"310325 "325310
"305320 "305320 ELEVATION IN FEET(NAVD88) ELEVATION
300 300
AAAA
295 295 AAAA LEGEND
0.2% ANNUAL CHANCE FLOOD * 1% ANNUAL CHANCE FLOOD
10%2% ANNUAL ANNUAL CHANCE CHANCE FLOOD FLOOD 290 10% ANNUAL CHANCE FLOOD
STREAM BED AAAA AREAS INCORPORATED AND
MCCRACKEN COUNTY, KY MCCRACKEN COUNTY, A CROSS SECTION LOCATION
FEDERAL EMERGENCY MANAGEMENT AGENCY EMERGENCY MANAGEMENT FEDERAL , 285 6,500 7,000 7,500 8,000 8,500 9,000 9,500 10,000 10,500 11,000 11,500 12,000 12,500 13,000
STREAM DISTANCE IN FEET ABOVE CONFLUENCE WITH TENNESSEE RIVER * No data is available 15P 335 335
100 YEAR PONDING 330 330 10 YEAR PONDING
325 325
320 320
ISLAND CREEK ISLAND
FLOOD PROFILES
315 315
310 310 ELEVATION IN FEET(NAVD88) ELEVATION
305 305
AAAA
300 300 LEGEND
0.2% ANNUAL CHANCE FLOOD * AAAA 1% ANNUAL CHANCE FLOOD
10%2% ANNUAL ANNUAL CHANCECHANCE FLOODFLOOD 295 10% ANNUAL CHANCE FLOOD
STREAM BED AAAA AREAS INCORPORATED AND
MCCRACKEN COUNTY, KY MCCRACKEN COUNTY, A CROSS SECTION LOCATION
FEDERAL EMERGENCY MANAGEMENT AGENCY EMERGENCY MANAGEMENT FEDERAL , 290 13,000 13,500 14,000 14,500 15,000 15,500 16,000 16,500 17,000 17,500 18,000 18,500 19,000 19,500
STREAM DISTANCE IN FEET ABOVE CONFLUENCE WITH TENNESSEE RIVER * No data is available 16P 340 340
335 335
LANE ROAD
100 YEAR PONDING 330 330 10 YEAR PONDING
325 325
ISLAND CREEK ISLAND
FLOOD PROFILES
320 320
315 315 ELEVATION IN FEET(NAVD88) ELEVATION
310 310
AAAA
305 305 LEGEND
0.2% ANNUAL CHANCE FLOOD AAAA * 1% ANNUAL CHANCE FLOOD
10%2% ANNUALANNUAL CHANCECHANCE FLOODFLOOD 300 10% ANNUAL CHANCE FLOOD
STREAM BED AAAA AREAS INCORPORATED AND
MCCRACKEN COUNTY, KY MCCRACKEN COUNTY, A CROSS SECTION LOCATION
FEDERAL EMERGENCY MANAGEMENT AGENCY EMERGENCY MANAGEMENT FEDERAL , 295 19,500 20,000 20,500 21,000 21,500 22,000 22,500 23,000 23,500 24,000 24,500 25,000 25,500 26,000
STREAM DISTANCE IN FEET ABOVE CONFLUENCE WITH TENNESSEE RIVER * No data is available 17P 350 350
345 345 CHAMPION CREEK US INTERSTATE 24 US INTERSTATE 340 CONFLUENCE WITH 340
335 335
ISLAND CREEK
FLOOD PROFILES
100 YEAR PONDING 330 330 10 YEAR PONDING
325 325 ELEVATION IN FEET (NAVD88) ELEVATION
320 320
AAAA
315 315 AAAA LEGEND
0.2% ANNUAL CHANCE FLOOD
1% ANNUAL CHANCE FLOOD
10%2% ANNUAL ANNUAL CHANCE CHANCE FLOOD FLOOD 310 10% ANNUAL CHANCE FLOOD
STREAM BED AAAA AND INCORPORATEDAREAS
MCCRACKEN KY COUNTY, A CROSS SECTION LOCATION
FEDERAL EMERGENCY MANAGEMENTAGENCY , 305 26,000 26,500 27,000 27,500 28,000 28,500 29,000 29,500 30,000 30,500 31,000 31,500 32,000 32,500
STREAM DISTANCE IN FEET ABOVE CONFLUENCE WITH TENNESSEE RIVER 18P 350 350
345 345 LIMIT LIMIT OF FLOODDIKE DETAILED STUDY DETAILED
340 HUSBANDSROAD 340
335 335
ISLAND CREEK
FLOOD PROFILES
330 330
325 325 ELEVATION IN FEET (NAVD88) ELEVATION
320 320
AAAA
315 315 LEGEND
0.2% ANNUAL CHANCE FLOOD
1% ANNUAL CHANCE FLOOD
10%2% ANNUAL ANNUAL CHANCE CHANCE FLOOD FLOOD 310 10% ANNUAL CHANCE FLOOD
STREAM BED AAAA AND INCORPORATEDAREAS
MCCRACKEN KY COUNTY, A CROSS SECTION LOCATION
FEDERAL EMERGENCY MANAGEMENTAGENCY , 305 32,500 33,000 33,500 34,000 34,500 35,000 35,500
STREAM DISTANCE IN FEET ABOVE CONFLUENCE WITH TENNESSEE RIVER 19P 360 360
1% ANNUAL CHANCE BACKWATER EFFECTS FROM OHIO RIVER
355 355 BLACKBRANCH US HIGHWAY 60 USHIGHWAY
350 CONFLUENCEWITH 350
345 345
FLOOD PROFILES
MASSAC CREEKMASSAC
340 340
335 335 ELEVATION IN FEET(NAVD88) ELEVATION
330 330
AAAA C , 325 AAAA 325 LEGEND
0.2% ANNUAL CHANCE FLOOD
1% ANNUAL CHANCE FLOOD
2% ANNUAL CHANCE FLOOD 320 10% ANNUAL CHANCE FLOOD
STREAM BED AAAA AREAS INCORPORATED AND
A B KY MCCRACKEN COUNTY,
, , A CROSS SECTION LOCATION
FEDERAL EMERGENCY MANAGEMENT AGENCY EMERGENCY MANAGEMENT FEDERAL , 315 26,500 27,000 27,500 28,000 28,500 29,000 29,500 30,000 30,500 31,000 31,500 32,000 32,500 33,000
STREAM DISTANCE IN FEET ABOVE CONFLUENCE WITH OHIO RIVER 20P 365 365
360 360
355 355 STATE HIGHWAY 3520 HIGHWAY STATE
350 350
FLOOD PROFILES
MASSAC CREEK
345 345
340 340 ELEVATION IN FEET (NAVD88) ELEVATION
335 335 AAAA
330 330 LEGEND
0.2% ANNUAL CHANCE FLOOD AAAA 1% ANNUAL CHANCE FLOOD
2% ANNUAL CHANCE FLOOD 325 10% ANNUAL CHANCE FLOOD
STREAM BED AAAA AND INCORPORATEDAREAS
D E MCCRACKEN KY COUNTY,
, , A CROSS SECTION LOCATION
FEDERAL EMERGENCY MANAGEMENTAGENCY , 320 33,000 33,500 34,000 34,500 35,000 35,500 36,000 36,500 37,000 37,500 38,000 38,500 39,000
STREAM DISTANCE IN FEET ABOVE CONFLUENCE WITH OHIO RIVER 21P 365 365
360 360 MIDDLEFORK MASSACCREEK
355 CONFLUENCE WITH 355
350 350
FLOOD PROFILES
MASSAC CREEK
345 345
AAAA
340 340 ELEVATION IN FEET (NAVD88) ELEVATION
335 335
AAAA
330 330 LEGEND
0.2% ANNUAL CHANCE FLOOD
1% ANNUAL CHANCE FLOOD
2% ANNUAL CHANCE FLOOD 325 10% ANNUAL CHANCE FLOOD
STREAM BED AAAA AND INCORPORATEDAREAS
F G MCCRACKEN KY COUNTY,
, , A CROSS SECTION LOCATION
FEDERAL EMERGENCY MANAGEMENTAGENCY , 320 38,500 39,000 39,500 40,000 40,500 41,000 41,500 42,000 42,500 43,000 43,500 44,000 44,500
STREAM DISTANCE IN FEET ABOVE CONFLUENCE WITH OHIO RIVER 22P 385 385
380 380 US HIGHWAY 62 USHIGHWAY 375 375
370 370
FLOOD PROFILES
MASSAC CREEKMASSAC
365 365
360 360 ELEVATION IN FEET(NAVD88) ELEVATION
355 355
AAAA H ,
350 350 LEGEND
0.2% ANNUAL CHANCE FLOOD
1% ANNUAL CHANCE FLOOD
2% ANNUAL CHANCE FLOOD 345 10% ANNUAL CHANCE FLOOD
STREAM BED AAAA AAAA AREAS INCORPORATED AND
MCCRACKEN COUNTY, KY MCCRACKEN COUNTY, A CROSS SECTION LOCATION
FEDERAL EMERGENCY MANAGEMENT AGENCY EMERGENCY MANAGEMENT FEDERAL , 340 44,000 44,500 45,000 45,500 46,000 46,500 47,000 47,500 48,000 48,500 49,000 49,500 50,000
STREAM DISTANCE IN FEET ABOVE CONFLUENCE WITH OHIO RIVER 23P 395 395
390 390
385 385
380 380
FLOOD PROFILES
MASSAC CREEKMASSAC
375 375
370 370 ELEVATION IN FEET(NAVD88) ELEVATION
365 365 AAAA
K ,
360 360 LEGEND
0.2% ANNUAL CHANCE FLOOD
1% ANNUAL CHANCE FLOOD AAAA 2% ANNUAL CHANCE FLOOD 355 10% ANNUAL CHANCE FLOOD
STREAM BED AAAA AREAS INCORPORATED AND
I J KY MCCRACKEN COUNTY,
, , A CROSS SECTION LOCATION
FEDERAL EMERGENCY MANAGEMENT AGENCY EMERGENCY MANAGEMENT FEDERAL , 350 49,500 50,000 50,500 51,000 51,500 52,000 52,500 53,000 53,500 54,000 54,500 55,000
STREAM DISTANCE IN FEET ABOVE CONFLUENCE WITH THE OHIO RIVER 24P 410 410
405 405 LIMIT LIMIT OF CLINTON ROAD DETAILED STUDY DETAILED
400 339 HIGHWAY STATE 400 STATE HIGHWAY 1322 HIGHWAY STATE LOVELACEVILLE ROAD
395 395
FLOOD PROFILES
MASSAC CREEKMASSAC
390 390
385 385 ELEVATION IN FEET(NAVD88) ELEVATION
380 AAAA 380
375 375 LEGEND
0.2% ANNUAL CHANCE FLOOD
1% ANNUAL CHANCE FLOOD
2% ANNUAL CHANCE FLOOD 370 10% ANNUAL CHANCE FLOOD AAAA STREAM BED AAAA AREAS INCORPORATED AND
L M KY MCCRACKEN COUNTY,
, , A CROSS SECTION LOCATION
FEDERAL EMERGENCY MANAGEMENT AGENCY EMERGENCY MANAGEMENT FEDERAL , 365 55,000 55,500 56,000 56,500 57,000 57,500 58,000 58,500 59,000 59,500 60,000 60,500 61,000
STREAM DISTANCE IN FEET ABOVE CONFLUENCE WITH OHIO RIVER 25P 375 375
1% ANNUAL CHANCE BACKWATER EFFECTS FROM MASSAC CREEK
370 370 BOULEVARD MCCRACKEN MASSAC CREEK
365 CONFLUENCEWITH 365
360 360
FLOOD PROFILES
355 355
MIDDLE FORK MASSAC CREEK FORK MIDDLE
350 350 ELEVATION IN FEET(NAVD88) ELEVATION
AAAA 345 345
AAAA B ,
340 340 LEGEND
0.2% ANNUAL CHANCE FLOOD
1% ANNUAL CHANCE FLOOD
2% ANNUAL CHANCE FLOOD 335 AAAA 10% ANNUAL CHANCE FLOOD
STREAM BED AAAA AREAS INCORPORATED AND
A KY MCCRACKEN COUNTY,
, A CROSS SECTION LOCATION
FEDERAL EMERGENCY MANAGEMENT AGENCY EMERGENCY MANAGEMENT FEDERAL , 330 0 500 1,000 1,500 2,000 2,500 3,000 3,500 4,000 4,500 5,000 5,500 6,000
STREAM DISTANCE IN FEET ABOVE CONFLUENCE WITH MASSAC CREEK 26P 385 385
380 380 US US ROUTE62
375 (BLANDVILLE ROAD) 375
370 370
FLOOD PROFILES
365 365
MIDDLEFORK MASSAC CREEK
360 360 ELEVATION IN FEET (NAVD88) ELEVATION
AAAA
355 355
D
AAAA ,
350 350 LEGEND
AAAA 0.2% ANNUAL CHANCE FLOOD
1% ANNUAL CHANCE FLOOD
2% ANNUAL CHANCE FLOOD 345 10% ANNUAL CHANCE FLOOD
STREAM BED AAAA AND INCORPORATEDAREAS
C MCCRACKEN KY COUNTY,
, A CROSS SECTION LOCATION
FEDERAL EMERGENCY MANAGEMENTAGENCY , 340 6,000 6,500 7,000 7,500 8,000 8,500 9,000 9,500 10,000 10,500 11,000 11,500 12,000 12,500
STREAM DISTANCE IN FEET ABOVE CONFLUENCE WITH MASSAC CREEK 27P 395 395
390 390
HINESROAD 385 385
380 380
FLOOD PROFILES
375 375
MIDDLE FORK MASSAC CREEK FORK MIDDLE
370 370 ELEVATION IN FEET(NAVD88) ELEVATION AAAA
365 365
360 360 AAAA LEGEND
0.2% ANNUAL CHANCE FLOOD
1% ANNUAL CHANCE FLOOD
2% ANNUAL CHANCE FLOOD 355 10% ANNUAL CHANCE FLOOD
STREAM BED AAAA AREAS INCORPORATED AND
E F KY MCCRACKEN COUNTY,
, , A CROSS SECTION LOCATION
FEDERAL EMERGENCY MANAGEMENT AGENCY EMERGENCY MANAGEMENT FEDERAL , 350 12,500 13,000 13,500 14,000 14,500 15,000 15,500 16,000 16,500 17,000 17,500 18,000 18,500 19,000
STREAM DISTANCE IN FEET ABOVE CONFLUENCE WITH MASSAC CREEK 28P 410 410
405 405
400 400 STATE HIGHWAY 1322 HIGHWAY STATE LOVELACEVILLE ROAD
395 395
FLOOD PROFILES
AAAA
390 390
MIDDLE FORK MASSAC CREEK FORK MIDDLE
385 385 AAAA ELEVATION IN FEET(NAVD88) ELEVATION
380 380
K ,
375 AAAA 375 LEGEND
0.2% ANNUAL CHANCE FLOOD
1% ANNUAL CHANCE FLOOD
2% ANNUAL CHANCE FLOOD 370 10% ANNUAL CHANCE FLOOD
STREAM BED AAAA AREAS INCORPORATED AND
G H I J KY MCCRACKEN COUNTY,
, , , , A CROSS SECTION LOCATION
FEDERAL EMERGENCY MANAGEMENT AGENCY EMERGENCY MANAGEMENT FEDERAL , 365 18,000 18,500 19,000 19,500 20,000 20,500 21,000 21,500 22,000 22,500 23,000 23,500 24,000 24,500
STREAM DISTANCE IN FEET ABOVE CONFLUENCE WITH MASSAC CREEK 29P 430 430
425 425 LIMIT LIMIT OF DETAILED STUDY DETAILED STATE HIGHWAY 1438 HIGHWAY STATE
420 420
415 415
FLOOD PROFILES
410 410
MIDDLEFORK MASSAC CREEK
405 405 ELEVATION IN FEET (NAVD88) ELEVATION
AAAA
400 400
AAAA
395 395 LEGEND
0.2% ANNUAL CHANCE FLOOD
1% ANNUAL CHANCE FLOOD
2% ANNUAL CHANCE FLOOD 390 10% ANNUAL CHANCE FLOOD
STREAM BED AAAA AND INCORPORATEDAREAS
L MCCRACKEN KY COUNTY,
, A CROSS SECTION LOCATION
FEDERAL EMERGENCY MANAGEMENTAGENCY , 385 24,500 25,000 25,500 26,000 26,500 27,000 27,500
STREAM DISTANCE IN FEET ABOVE CONFLUENCE WITH MASSAC CREEK 30P 380 380
360 360 BOUNDARY MCCRACKEN COUNTY
340 340
320 320
OHIO RIVER OHIO
FLOOD PROFILES
300 300
280 280 ELEVATION IN FEET(NAVD88) ELEVATION AAAA
AAAA 260 260
E ,
240 240 LEGEND
0.2% ANNUAL CHANCE FLOOD
1% ANNUAL CHANCE FLOOD
2% ANNUAL CHANCE FLOOD 220 10% ANNUAL CHANCE FLOOD
STREAM BED AAAA AREAS INCORPORATED AND
A B C D KY MCCRACKEN COUNTY,
, , , , A CROSS SECTION LOCATION
FEDERAL EMERGENCY MANAGEMENT AGENCY EMERGENCY MANAGEMENT FEDERAL , 200 957.5 957.0 956.5 956.0 955.5 955.0 954.5 954.0 953.5 953.0 952.5 952.0 951.5 951.0
STREAM DISTANCE IN MILES BELOW PITTSBURGH 31P 380 380
360 360
340 340
320 320
OHIO RIVER OHIO
FLOOD PROFILES
300 300
280 280 ELEVATION IN FEET(NAVD88) ELEVATION
AAAA AAAA 260 260
K L , ,
240 240 LEGEND
0.2% ANNUAL CHANCE FLOOD
1% ANNUAL CHANCE FLOOD
2% ANNUAL CHANCE FLOOD 220 10% ANNUAL CHANCE FLOOD
STREAM BED AAAA AREAS INCORPORATED AND
F G H I J KY MCCRACKEN COUNTY,
, , , , , A CROSS SECTION LOCATION
FEDERAL EMERGENCY MANAGEMENT AGENCY EMERGENCY MANAGEMENT FEDERAL , 200 951.0 950.5 950.0 949.5 949.0 948.5 948.0 947.5 947.0 946.5 946.0 945.5 945.0 944.5
STREAM DISTANCE IN MILES BELOW PITTSBURGH 32P 380 380
360 360 RAILROAD LEFT BANK LEFT DAM NO. 52 MASSAC CREEK PERKINSCREEK US INTERSTATE 24 USINTERSTATE CONFLUENCEWITH
340 340
320 320
OHIO RIVER OHIO
FLOOD PROFILES
300 300
280 280 ELEVATION IN FEET(NAVD88) ELEVATION
AAAA 260 260
AAAA R S , ,
240 240 LEGEND
0.2% ANNUAL CHANCE FLOOD
1% ANNUAL CHANCE FLOOD
2% ANNUAL CHANCE FLOOD 220 10% ANNUAL CHANCE FLOOD
STREAM BED AAAA AREAS INCORPORATED AND
M N O P Q KY MCCRACKEN COUNTY,
, , , , , A CROSS SECTION LOCATION
FEDERAL EMERGENCY MANAGEMENT AGENCY EMERGENCY MANAGEMENT FEDERAL , 200 944.5 944.0 943.5 943.0 942.5 942.0 941.5 941.0 940.5 940.0 939.5 939.0 938.5 938.0
STREAM DISTANCE IN MILES BELOW PITTSBURGH 33P 380 380
360 360 BOUNDARY US HIGHWAY 45 US HIGHWAY MCCRACKENCOUNTY
CITY LIMITS CITY OF KY PADUCAH,
340 340
320 320
OHIORIVER
FLOOD PROFILES
300 300
280 280 ELEVATION IN FEET (NAVD88) ELEVATION
AAAA
260 AAAA 260
X ,
240 240 LEGEND
0.2% ANNUAL CHANCE FLOOD
1% ANNUAL CHANCE FLOOD
2% ANNUAL CHANCE FLOOD 220 10% ANNUAL CHANCE FLOOD
STREAM BED AAAA AND INCORPORATEDAREAS
S T U V W MCCRACKEN KY COUNTY,
, , , , , A CROSS SECTION LOCATION
FEDERAL EMERGENCY MANAGEMENTAGENCY , 200 938.0 937.5 937.0 936.5 936.0 935.5 935.0 934.5 934.0 933.5 933.0 932.5 932.0 931.5
STREAM DISTANCE IN MILES BELOW PITTSBURGH 34P 355 355 1% ANNUAL CHANCE BACKWATER EFFECTS FROM THE OHIO RIVER
350 350 HIGHWAY 305 HIGHWAY KENTUCKY STATE
345 345
340 340
FLOOD PROFILES
PERKINS CREEK
335 335
330 330 ELEVATION IN FEET (NAVD88) ELEVATION
AAAA 325 325
A ,
320 320 LEGEND
0.2% ANNUAL CHANCE FLOOD
AAAA 1% ANNUAL CHANCE FLOOD
2% ANNUAL CHANCE FLOOD 315 10% ANNUAL CHANCE FLOOD
STREAM BED AAAA AND INCORPORATEDAREAS
MCCRACKEN KY COUNTY, A CROSS SECTION LOCATION
FEDERAL EMERGENCY MANAGEMENTAGENCY , 310 15,000 16,000 17,000 18,000 19,000 20,000 21,000 22,000 23,000 24,000 25,000 26,000 27,000 28,000
STREAM DISTANCE IN FEET ABOVE CONFLUENCE WITH THE OHIO RIVER 35P 370 370
365 365
RAILROAD
360 360
COUNTY PARK ROAD COUNTYPARK
355 355
FLOOD PROFILES
PERKINS CREEK
350 350
HINKLEVILLEROAD
SOUTH HINKLEVILLEROAD 345 345 ELEVATION IN FEET (NAVD88) ELEVATION
AAAA 340 340
335 335 LEGEND
0.2% ANNUAL CHANCE FLOOD
1% ANNUAL CHANCE FLOOD AAAA RAILROAD 2% ANNUAL CHANCE FLOOD 330 10% ANNUAL CHANCE FLOOD
STREAM BED AAAA AND INCORPORATEDAREAS
B C MCCRACKEN KY COUNTY,
, , A CROSS SECTION LOCATION
FEDERAL EMERGENCY MANAGEMENTAGENCY , 325 28,000 29,000 30,000 31,000 32,000 33,000 34,000 35,000 36,000 37,000 38,000 39,000 40,000 41,000
STREAM DISTANCE IN FEET ABOVE CONFLUENCE WITH THE OHIO RIVER 36P 390 390 OVERFLOW EFFECTS FROM CROOKED CREEK INTERSTATE 24 INTERSTATE 385 385 PECANDRIVE
WOODBRIDGE HANSENROAD CROOKEDCREEK
380 CONFLUENCE WITH 380
LOW WATER CULVERT LOWWATER
375 375
FLOOD PROFILES
PERKINS CREEK
370 370
365 AAAA 365 ELEVATION IN FEET (NAVD88) ELEVATION NORTH
360 FRIENDSHIP ROAD 360
355 355 LEGEND
0.2% ANNUAL CHANCE FLOOD
1% ANNUAL CHANCE FLOOD
CULVERT 2% ANNUAL CHANCE FLOOD 350 AAAA 10% ANNUAL CHANCE FLOOD
STREAM BED AAAA AND INCORPORATEDAREAS
D E MCCRACKEN KY COUNTY,
, , A CROSS SECTION LOCATION
FEDERAL EMERGENCY MANAGEMENTAGENCY , 345 38,000 39,000 40,000 41,000 42,000 43,000 44,000 45,000 46,000 47,000 48,000 49,000 50,000 51,000
STREAM DISTANCE IN FEET ABOVE CONFLUENCE WITH OHIO RIVER 37P 410 410
405 405 LIMIT LIMIT OF DETAILED STUDY DETAILED PRIVATE DRIVE PRIVATE 400 CROSSINGFARM 400 BLANDVILLE ROAD/US62
395 395
FLOOD PROFILES
PERKINS CREEK
390 AAAA 390
385 385 ELEVATION IN FEET (NAVD88) ELEVATION
380 380
AAAA 375 375 LEGEND
0.2% ANNUAL CHANCE FLOOD
1% ANNUAL CHANCE FLOOD
2% ANNUAL CHANCE FLOOD 370 10% ANNUAL CHANCE FLOOD
STREAM BED AAAA AND INCORPORATEDAREAS
F G H MCCRACKEN KY COUNTY,
, , , A CROSS SECTION LOCATION
FEDERAL EMERGENCY MANAGEMENTAGENCY , 365 48,000 49,000 50,000 51,000 52,000 53,000 54,000 55,000 56,000 57,000 58,000 59,000 60,000 61,000
STREAM DISTANCE IN FEET ABOVE CONFLUENCE WITH THE OHIO RIVER 38P 400 400
1% ANNUAL CHANCE OVERFLOW FROM THE OHIO RIVER
380 380 BRIDGE THEOHIO RIVER CLARKMEMORIAL
360 CONFLUENCE WITH 360 LIMIT LIMIT OFSTUDY DETAILED MCCRACKENCOUNTY BOUNDARY
340 340
FLOOD PROFILES TENNESSEE RIVER
320 320
300 300 ELEVATION IN FEET (NAVD88) ELEVATION
280 280 AAAA AAAA
260 260 LEGEND
0.2% ANNUAL CHANCE FLOOD
1% ANNUAL CHANCE FLOOD
2% ANNUAL CHANCE FLOOD 240 10% ANNUAL CHANCE FLOOD
STREAM BED AAAA AND INCORPORATEDAREAS
A B C MCCRACKEN KY COUNTY,
, , , A CROSS SECTION LOCATION
FEDERAL EMERGENCY MANAGEMENTAGENCY , 220 0 1 2 3 4 5 6 7 8 9 10 11 12 13
STREAM DISTANCE IN MILES ABOVE CONFLUENCE WITH THE OHIO RIVER 39P 400 400 1% ANNUAL CHANCE BACKWATER EFFECTS FROM OHIO RIVER
390 390 RAILROAD
STEEL ROAD STEEL 380 380
370 370
FLOOD PROFILES
360 360
WEST FORK MASSAC CREEK FORKMASSAC WEST
350 350 ELEVATION IN FEET(NAVD88) ELEVATION
340 340
D E AAAA , , 330 330 LEGEND
0.2% ANNUAL CHANCE FLOOD
1% ANNUAL CHANCE FLOOD AAAA 2% ANNUAL CHANCE FLOOD 320 10% ANNUAL CHANCE FLOOD
STREAM BED AAAA AREAS INCORPORATED AND
A B C KY MCCRACKEN COUNTY,
, , , A CROSS SECTION LOCATION
FEDERAL EMERGENCY MANAGEMENT AGENCY EMERGENCY MANAGEMENT FEDERAL , 310 2,000 3,000 4,000 5,000 6,000 7,000 8,000 9,000 10,000 11,000 12,000 13,000 14,000 15,000
STREAM DISTANCE IN FEET ABOVE CONFLUENCE WITH MASSAC CREEK 40P 420 420
410 410 RAILROAD US HIGHWAY 60 USHIGHWAY WOODVILLE ROAD
400 725 HIGHWAY STATE 400
390 390
FLOOD PROFILES
380 380
WEST FORK MASSAC CREEK FORKMASSAC WEST
370 370 ELEVATION IN FEET(NAVD88) ELEVATION
360 360
AAAA J ,
350 350 LEGEND
0.2% ANNUAL CHANCE FLOOD
1% ANNUAL CHANCE FLOOD
2% ANNUAL CHANCE FLOOD 340 AAAA 10% ANNUAL CHANCE FLOOD
STREAM BED AAAA AREAS INCORPORATED AND
F G H I KY MCCRACKEN COUNTY,
, , , , A CROSS SECTION LOCATION
FEDERAL EMERGENCY MANAGEMENT AGENCY EMERGENCY MANAGEMENT FEDERAL , 330 15,000 16,000 17,000 18,000 19,000 20,000 21,000 22,000 23,000 24,000 25,000 26,000 27,000 28,000
STREAM DISTANCE IN FEET ABOVE CONFLUENCE WITH MASSAC CREEK 41P 440 440
430 430
BIGGS ROAD KELLEYROAD STATE HIGHWAY 996 HIGHWAY STATE
420 726 HIGHWAY STATE 420 STATE HIGHWAY 3520 HIGHWAY STATE METROPOLISLAKE RD
410 410
FLOOD PROFILES
400 400
WEST FORK MASSAC CREEK FORKMASSAC WEST
390 390 ELEVATION IN FEET(NAVD88) ELEVATION
AAAA
380 380
P ,
370 370 LEGEND
0.2% ANNUAL CHANCE FLOOD
1% ANNUAL CHANCE FLOOD
2% ANNUAL CHANCE FLOOD 360 AAAA 10% ANNUAL CHANCE FLOOD
STREAM BED AAAA AREAS INCORPORATED AND
K L M N O KY MCCRACKEN COUNTY,
, , , , , A CROSS SECTION LOCATION
FEDERAL EMERGENCY MANAGEMENT AGENCY EMERGENCY MANAGEMENT FEDERAL , 350 28,000 29,000 30,000 31,000 32,000 33,000 34,000 35,000 36,000 37,000 38,000 39,000 40,000 41,000
STREAM DISTANCE IN FEET ABOVE CONFLUENCE WITH MASSAC CREEK 42P 460 460
450 450 LIMIT LIMIT OF
BIGGS ROAD
440 STUDY DETAILED 440
430 430
FLOOD PROFILES
420 420 AAAA
WEST FORK MASSAC CREEK FORKMASSAC WEST
410 410 ELEVATION IN FEET(NAVD88) ELEVATION
400 400
U V , ,
390 390 LEGEND AAAA 0.2% ANNUAL CHANCE FLOOD
1% ANNUAL CHANCE FLOOD
2% ANNUAL CHANCE FLOOD 380 10% ANNUAL CHANCE FLOOD
STREAM BED AAAA AREAS INCORPORATED AND
Q R S T KY MCCRACKEN COUNTY,
, , , , A CROSS SECTION LOCATION
FEDERAL EMERGENCY MANAGEMENT AGENCY EMERGENCY MANAGEMENT FEDERAL , 370 41,000 42,000 43,000 44,000 45,000 46,000 47,000 48,000 49,000 50,000 51,000 52,000 53,000
STREAM DISTANCE IN FEET ABOVE CONFLUENCE WITH MASSAC CREEK 43P